Round|Natural|GIA

1.50ct G SI1 Round Natural Diamond

EX • G/SI1 • GIA 6495040258

Certificate GIA 6495040258

Diamond specifications and retailer prices

From $11,677 NZD
$6,581 USD
As of October 30, 2026
Save $9,836 NZD (46%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: $25,818 NZD at NZ Jewellers · As of September 21, 2026
View at NZ Jewellers

About this 1.5ct natural round diamond

This 1.5ct natural round sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6495040258. Listed at 26 retailers as of October 30, 2026, with a 84% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.50
Carat
G
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle34°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 6495040258
Dimensions7.29 × 7.35 × 4.57 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Culet sizeNone
Top View
7.29 mm7.35 mm1.50 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6495040258
Side View
Table 58.0%Crown 34°Girdle: THN-STKPavilion 41.8°Culet: NoneDepth 62.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $21,513 NZD|Low: $10,204 NZD|High: $21,772 NZD|Avg: $14,467 NZD|-0.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
November 1, 2026
Retailer 4$11,677 NZD
Retailer 3$12,087 NZD
Retailer 17$12,245 NZD
Retailer 14$12,398 NZD
Retailer 13$12,890 NZD
Retailer 21$12,906 NZD
Retailer 2$12,908 NZD
Retailer 9$13,750 NZD
Retailer 6$14,216 NZD
Retailer 20$14,285 NZD
Retailer 15$14,286 NZD
Retailer 10$14,448 NZD
Retailer 18$14,616 NZD
Retailer 5$15,383 NZD
Retailer 8$15,383 NZD
Retailer 11$15,485 NZD
Retailer 19$15,602 NZD
Retailer 7$15,898 NZD
Retailer 12$16,517 NZD
Retailer 16$18,964 NZD
Retailer 1$21,513 NZD

35 data points across 21 retailers

26 retailers$11,677 NZD to $21,513 NZD

A
Cheapest Retailer
-
$11,677 NZD
$6,581 USD
A
Retailer 2
-
$12,022 NZD
A$10,424 AUD
View
A
Retailer 3
-
$12,087 NZD
$6,812 USD
View
B+
Retailer 4
-
$12,245 NZD
$6,901 USD
View
B+
Retailer 5
-
$12,398 NZD
$6,987 USD
View
B+
Retailer 6
-
$12,890 NZD
$7,265 USD
View
B+
Retailer 7
-
$12,906 NZD
$7,274 USD
View
Final sale: no returns
B+
Retailer 8
-
$13,750 NZD
$7,750 USD
View
Retailer 9
-
$13,985 NZD
$7,882 USD
View
Price last confirmed 39 days ago
Retailer 10
-
$13,985 NZD
$7,882 USD
View
Price last confirmed 31 days ago
Retailer 11
-
$14,200 NZD
$8,003 USD
View
Price last confirmed 33 days ago
Retailer 12
-
$14,216 NZD
$8,012 USD
View
Price last confirmed 9 days ago
B+
Retailer 13
-
$14,285 NZD
$8,051 USD
View
B+
Retailer 14
-
$14,286 NZD
£6,340 GBP
View
B+
Retailer 15
-
$14,448 NZD
$8,143 USD
View
Retailer 16
-
$14,616 NZD
A$12,674 AUD
View
Price last confirmed 11 days ago
B+
Retailer 17
-
$15,383 NZD
$8,670 USD
View
B+
Retailer 18
-
$15,383 NZD
$8,670 USD
View
B+
Retailer 19
-
$15,485 NZD
$8,728 USD
View
B+
Retailer 20
-
$15,602 NZD
$8,793 USD
View
B
Retailer 21
-
$15,898 NZD
$8,960 USD
View
Retailer 22
-
$16,135 NZD
$9,094 USD
View
Price last confirmed 41 days ago
B+
Retailer 23
-
$16,517 NZD
€8,866 EUR
View
B
Retailer 24
-
$18,964 NZD
ZAR 172,665 ZAR
View
B
Retailer 25
-
$21,513 NZD
£9,547 GBP
View
Most Expensive
NZ Jewellers
7ab3af2b-e4b4-4889-8735-bb9ac1c585be · Sep 21
$25,818 NZD
$14,551 USD
View
Price last confirmed 41 days ago
25 more retailers have this diamond
Prices start from $11,677 NZDSave up to $9,836 NZD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.50ct Round
$11,677 NZD