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Round|Natural|GIA

1.50ct F SI1 Round Natural Diamond

EX • F/SI1 • GIA 2554887121

Certificate GIA 2554887121

Diamond specifications and retailer prices

From $10,510 NZD
HK$46,200 HKD
As of November 1, 2026
Save $8,506 NZD (45%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $23,496 NZD at NZ Jewellers · As of September 28, 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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2554887121. Listed at 14 retailers as of October 29, 2026, with a 81% 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
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2554887121
Dimensions7.40 × 7.44 × 4.40 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Crystal, Feather, Indented Natural, Cavity, Needle
Top View
7.40 mm7.44 mm1.50 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2554887121
Side View
Table 61.0%Crown 32.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 59.3%

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: Nov 1
Current: $10,684 NZD|Low: $10,388 NZD|High: $19,522 NZD|Avg: $13,438 NZD|-3.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 5$10,510 NZD
Retailer 1$10,684 NZD
Retailer 2$12,138 NZD
Retailer 8$12,528 NZD
Retailer 10$13,395 NZD
Retailer 9$13,634 NZD
Retailer 4$14,549 NZD
Retailer 3$14,859 NZD
Retailer 6$15,667 NZD
Retailer 7$19,017 NZD

33 data points across 10 retailers

14 retailers$10,510 NZD to $19,017 NZD

A
Cheapest Retailer
-
$10,510 NZD
HK$46,200 HKD
A
Retailer 2
-
$10,684 NZD
₹572,527 INR
View
A
Retailer 3
-
$10,982 NZD
A$9,507 AUD
View
Retailer 4
-
$12,138 NZD
SGD 9,229 SGD
View
Price last confirmed 22 days ago
B+
Retailer 5
-
$12,528 NZD
$7,049 USD
View
Final sale: no returns
Retailer 6
-
$13,395 NZD
A$11,595 AUD
View
Price last confirmed 29 days ago
Retailer 7
-
$13,634 NZD
$7,671 USD
View
Price last confirmed 13 days ago
B+
Retailer 8
-
$13,965 NZD
A$12,088 AUD
View
Retailer 9
-
$14,048 NZD
$7,904 USD
View
Price last confirmed 34 days ago
B+
Retailer 10
-
$14,549 NZD
€7,796 EUR
View
B+
Retailer 11
-
$14,859 NZD
£6,583 GBP
View
B
Retailer 12
-
$15,667 NZD
$8,815 USD
View
B
Retailer 13
-
$19,017 NZD
£8,425 GBP
View
Most Expensive
NZ Jewellers
4e892bac-32ee-4fd1-b16a-f0b1602a8d3c · Sep 28
$23,496 NZD
$13,220 USD
View
Price last confirmed 35 days ago
13 more retailers have this diamond
Prices start from $10,510 NZDSave up to $8,506 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
$10,510 NZD