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Round|Natural|GIA

1.51ct G SI2 Round Natural Diamond

EX • G/SI2 • GIA 7521240383

Certificate GIA 7521240383

Diamond specifications and retailer prices

From $10,415 NZD
$5,870 USD
As of November 1, 2026
Save $10,696 NZD (51%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $22,257 NZD at NZ Jewellers · As of September 21, 2026
View at NZ Jewellers

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 7521240383. Listed at 15 retailers as of October 30, 2026, with a 103% 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

1.51
Carat
G
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 7521240383
Dimensions7.30 × 7.26 × 4.57 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
7.30 mm7.26 mm1.51 ctG / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7521240383
Side View
Table 57.0%Crown 35.5°Girdle: Slightly ThickPavilion 41°Culet: NoneDepth 62.9%

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: $21,111 NZD|Low: $10,415 NZD|High: $21,111 NZD|Avg: $13,690 NZD
NZ Jewellers
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
November 2, 2026
Retailer 4$10,415 NZD
Retailer 9$10,668 NZD
Retailer 12$10,919 NZD
Retailer 6$11,428 NZD
Retailer 10$11,758 NZD
Retailer 2$12,140 NZD
Retailer 13$12,179 NZD
Retailer 5$12,828 NZD
Retailer 11$12,828 NZD
Retailer 14$13,254 NZD
Retailer 7$13,730 NZD
Retailer 3$18,478 NZD
Retailer 8$18,595 NZD
NZ Jewellers$21,111 NZD

38 data points across 14 retailers

15 retailers$10,415 NZD to $21,111 NZD

A
Cheapest Retailer
-
$10,415 NZD
$5,870 USD
A
Retailer 2
-
$10,668 NZD
CA$8,351 CAD
View
A
Retailer 3
-
$10,919 NZD
$6,154 USD
View
A
Retailer 4
-
$11,428 NZD
SGD 8,704 SGD
View
A
Retailer 5
-
$11,758 NZD
$6,627 USD
View
A
Retailer 6
-
$12,140 NZD
£5,388 GBP
View
A
Retailer 7
-
$12,179 NZD
$6,864 USD
View
B+
Retailer 8
-
$12,828 NZD
$7,230 USD
View
B+
Retailer 9
-
$12,828 NZD
$7,230 USD
View
B+
Retailer 10
-
$13,254 NZD
$7,470 USD
View
B+
Retailer 11
-
$13,730 NZD
€7,370 EUR
View
B
Retailer 12
-
$18,478 NZD
$10,414 USD
View
B
Retailer 13
-
$18,595 NZD
£8,252 GBP
View
B
Retailer 14
-
$21,111 NZD
$11,898 USD
View
Most Expensive
NZ Jewellers
2da3d894-812d-4f15-93a8-77e8c8b89583 · Sep 21
$22,257 NZD
$12,544 USD
View
Price last confirmed 41 days ago
14 more retailers have this diamond
Prices start from $10,415 NZDSave up to $10,696 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
1.51ct Round
$10,415 NZD