Round|Natural|GIA

1.50ct G SI1 Round Natural Diamond

EX • G/SI1 • GIA 6495040258

Certificate GIA 6495040258

Diamond specifications and retailer prices

From $6,581 USD
As of October 27, 2026
Save $5,560 USD (46%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: $14,551 USD 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 26, 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
Color
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 27
Current: $8,003 USD|Low: $5,751 USD|High: $12,271 USD|Avg: $8,119 USD|+1.1%
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
October 28, 2026
Retailer 4$6,581 USD
Retailer 2$6,812 USD
Retailer 17$6,901 USD
Retailer 14$6,987 USD
Retailer 13$7,265 USD
Retailer 21$7,274 USD
Retailer 3$7,275 USD
Retailer 9$7,750 USD
Retailer 1$8,003 USD
Retailer 6$8,012 USD
Retailer 20$8,051 USD
Retailer 10$8,143 USD
Retailer 18$8,238 USD
Retailer 5$8,670 USD
Retailer 8$8,670 USD
Retailer 11$8,728 USD
Retailer 19$8,793 USD
Retailer 7$8,960 USD
Retailer 12$9,299 USD
Retailer 15$10,593 USD
Retailer 16$12,141 USD

35 data points across 21 retailers

26 retailers$6,581 USD to $12,141 USD

A
Cheapest Retailer
-
$6,581 USD
A
Retailer 2
-
$6,775 USD
A$10,424 AUD
View
A
Retailer 3
-
$6,812 USD
View
B+
Retailer 4
-
$6,901 USD
View
B+
Retailer 5
-
$6,987 USD
View
B+
Retailer 6
-
$7,265 USD
View
B+
Retailer 7
-
$7,274 USD
View
Final sale: no returns
B+
Retailer 8
-
$7,750 USD
View
B+
Retailer 9
-
$7,882 USD
View
Price last confirmed 35 days ago
B+
Retailer 10
-
$7,882 USD
View
Price last confirmed 28 days ago
B+
Retailer 11
-
$8,003 USD
£6,301 GBP
View
B+
Retailer 12
-
$8,003 USD
View
Price last confirmed 29 days ago
B+
Retailer 13
-
$8,012 USD
View
B+
Retailer 14
-
$8,051 USD
View
B+
Retailer 15
-
$8,143 USD
View
B+
Retailer 16
-
$8,238 USD
A$12,674 AUD
View
Price last confirmed 7 days ago
B+
Retailer 17
-
$8,670 USD
View
B+
Retailer 18
-
$8,670 USD
View
B+
Retailer 19
-
$8,728 USD
View
B+
Retailer 20
-
$8,793 USD
View
B
Retailer 21
-
$8,960 USD
View
B
Retailer 22
-
$9,094 USD
View
Price last confirmed 37 days ago
B+
Retailer 23
-
$9,299 USD
€8,856 EUR
View
B
Retailer 24
-
$10,593 USD
ZAR 171,130 ZAR
View
B
Retailer 25
-
$12,141 USD
£9,560 GBP
View
Most Expensive
B
NZ Jewellers
7ab3af2b-e4b4-4889-8735-bb9ac1c585be · Sep 21
$14,551 USD
View
Price last confirmed 38 days ago
25 more retailers have this diamond
Prices start from $6,581 USDSave up to $5,560 USD

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
$6,581 USD