Radiant|Natural|GIA

1.51ct E SI1 Radiant Natural Diamond

EX • E/SI1 • GIA 2245001864

Certificate GIA 2245001864

Diamond specifications and retailer prices

From $5,876 USD
As of October 28, 2026
Save $5,329 USD (48%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $14,162 USD 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
Color
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: $7,176 USD|Low: $5,876 USD|High: $11,640 USD|Avg: $7,380 USD|-0.5%
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 29, 2026
Retailer 17$5,876 USD
Retailer 8$5,888 USD
Retailer 4$6,269 USD
Retailer 3$6,362 USD
Retailer 14$6,513 USD
Retailer 6$6,559 USD
Retailer 18$6,623 USD
Retailer 12$6,633 USD
Retailer 10$6,686 USD
Retailer 7$6,700 USD
Retailer 9$6,910 USD
Retailer 5$6,958 USD
Retailer 1$7,176 USD
Retailer 13$7,668 USD
Retailer 11$7,702 USD
Retailer 2$8,510 USD
Retailer 16$8,724 USD
Retailer 19$9,737 USD
Retailer 15$11,205 USD

22 data points across 19 retailers

23 retailers$5,876 USD to $11,205 USD

A
Cheapest Retailer
-
$5,876 USD
A
Retailer 2
-
$5,888 USD
HK$46,000 HKD
View
A
Retailer 3
-
$6,269 USD
View
A
Retailer 4
-
$6,362 USD
View
A
Retailer 5
-
$6,513 USD
View
A
Retailer 6
-
$6,559 USD
A$10,091 AUD
View
A
Retailer 7
-
$6,623 USD
View
A
Retailer 8
-
$6,633 USD
€6,317 EUR
View
A
Retailer 9
-
$6,686 USD
View
Final sale: no returns
A
Retailer 10
-
$6,700 USD
View
A
Retailer 11
-
$6,755 USD
SGD 9,128 SGD
View
Price last confirmed 21 days ago
A
Retailer 12
-
$6,910 USD
View
A
Retailer 13
-
$6,958 USD
View
A
Retailer 14
-
$7,176 USD
£5,651 GBP
View
A
Retailer 15
-
$7,560 USD
View
Price last confirmed 20 days ago
A
Retailer 16
-
$7,668 USD
View
A
Retailer 17
-
$7,702 USD
A$11,850 AUD
View
Price last confirmed 7 days ago
B+
Retailer 18
-
$7,818 USD
A$12,028 AUD
View
B+
Retailer 19
-
$8,510 USD
View
B+
Retailer 20
-
$8,724 USD
€8,309 EUR
View
B+
Retailer 21
-
$9,737 USD
ZAR 157,302 ZAR
View
B+
Retailer 22
-
$11,205 USD
£8,823 GBP
View
Most Expensive
B
NZ Jewellers
d72e9f87-f2b0-40af-9c57-de40d7e9850d · Sep 21
$14,162 USD
View
Price last confirmed 38 days ago
22 more retailers have this diamond
Prices start from $5,876 USDSave up to $5,329 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
1.51ct Radiant
$5,876 USD