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Radiant|Natural|GIA

1.51ct E SI1 Radiant Natural Diamond

EX • E/SI1 • GIA 2245001864

Certificate GIA 2245001864

Diamond specifications and retailer prices

From $10,426 NZD
$5,876 USD
As of October 28, 2026
Save $9,456 NZD (48%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $25,128 NZD at NZ Jewellers · As of September 21, 2026
View at NZ Jewellers

About this 1.51ct natural radiant diamond

This 1.51ct natural radiant sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2245001864. Listed at 23 retailers as of October 28, 2026, with a 91% 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
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2245001864
Dimensions7.57 × 5.59 × 3.79 mm
L/W Ratio1.35
Girdle conditionPolished
Top View
7.57 mm5.59 mm1.51 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2245001864
Side View
Table 66.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 67.8%

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 28
Current: $11,754 NZD|Low: $10,426 NZD|High: $20,652 NZD|Avg: $13,123 NZD|-1.7%
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
October 30, 2026
Retailer 17$10,426 NZD
Retailer 8$10,447 NZD
Retailer 4$11,123 NZD
Retailer 3$11,288 NZD
Retailer 14$11,556 NZD
Retailer 6$11,638 NZD
Retailer 18$11,751 NZD
Retailer 1$11,754 NZD
Retailer 10$11,863 NZD
Retailer 7$11,888 NZD
Retailer 9$12,260 NZD
Retailer 5$12,345 NZD
Retailer 12$12,772 NZD
Retailer 13$13,605 NZD
Retailer 11$13,666 NZD
Retailer 2$15,100 NZD
Retailer 16$15,480 NZD
Retailer 19$17,276 NZD
Retailer 15$19,881 NZD

22 data points across 19 retailers

23 retailers$10,426 NZD to $19,881 NZD

A
Cheapest Retailer
-
$10,426 NZD
$5,876 USD
A
Retailer 2
-
$10,447 NZD
HK$46,000 HKD
View
A
Retailer 3
-
$11,123 NZD
$6,269 USD
View
A
Retailer 4
-
$11,288 NZD
$6,362 USD
View
A
Retailer 5
-
$11,556 NZD
$6,513 USD
View
A
Retailer 6
-
$11,638 NZD
A$10,091 AUD
View
A
Retailer 7
-
$11,751 NZD
$6,623 USD
View
A
Retailer 8
-
$11,754 NZD
€6,309 EUR
View
A
Retailer 9
-
$11,863 NZD
$6,686 USD
View
Final sale: no returns
A
Retailer 10
-
$11,888 NZD
$6,700 USD
View
Retailer 11
-
$11,985 NZD
SGD 9,128 SGD
View
Price last confirmed 22 days ago
A
Retailer 12
-
$12,260 NZD
$6,910 USD
View
A
Retailer 13
-
$12,345 NZD
$6,958 USD
View
A
Retailer 14
-
$12,772 NZD
£5,668 GBP
View
Retailer 15
-
$13,414 NZD
$7,560 USD
View
Price last confirmed 22 days ago
A
Retailer 16
-
$13,605 NZD
$7,668 USD
View
Retailer 17
-
$13,666 NZD
A$11,850 AUD
View
Price last confirmed 8 days ago
B+
Retailer 18
-
$13,872 NZD
A$12,028 AUD
View
B+
Retailer 19
-
$15,100 NZD
$8,510 USD
View
B+
Retailer 20
-
$15,480 NZD
€8,309 EUR
View
B+
Retailer 21
-
$17,276 NZD
ZAR 157,302 ZAR
View
B+
Retailer 22
-
$19,881 NZD
£8,823 GBP
View
Most Expensive
NZ Jewellers
d72e9f87-f2b0-40af-9c57-de40d7e9850d · Sep 21
$25,128 NZD
$14,162 USD
View
Price last confirmed 39 days ago
22 more retailers have this diamond
Prices start from $10,426 NZDSave up to $9,456 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 Radiant
$10,426 NZD