Radiant|Natural|GIA

1.51ct E SI1 Radiant Natural Diamond

ID • E/SI1 • GIA 6515595253

Certificate GIA 6515595253

Diamond specifications and retailer prices

From $6,511 USD
As of November 6, 2026
Save $2,102 USD (24%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $8,613 USD at Yorxs · As of November 6, 2026
View at Yorxs

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 6515595253. Listed at 10 retailers as of November 6, 2026, with prices from $6,511 to $8,613, a $2,102 spread on the same certified stone. Yorxs lists it at $8,613. 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
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.81°
Pavilion angle30.09°
OriginNatural
Grading LabGIA
CertificateGIA 6515595253
Dimensions7.39 × 5.70 × 3.83 mm
L/W Ratio1.30
Top View
7.39 mm5.70 mm1.51 ctE / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6515595253
Side View
Table 67.0%Crown 44.81°Girdle: ThickPavilion 30.09°Culet: NoneDepth 67.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $7,474 USD|Low: $6,510 USD|High: $11,179 USD|Avg: $7,868 USD|+0.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Yorxs
November 7, 2026
Retailer 12$6,511 USD
Retailer 10$6,651 USD
Retailer 5$6,863 USD
Retailer 7$6,863 USD
Retailer 11$7,391 USD
Retailer 1$7,474 USD
Retailer 8$7,654 USD
Retailer 3$8,020 USD
Retailer 4$8,020 USD
Retailer 6$8,071 USD
Retailer 2$8,280 USD
Yorxs$8,613 USD
Retailer 9$11,150 USD

15 data points across 13 retailers

10 retailers$6,511 USD to $8,613 USD

A
Cheapest Retailer
-
$6,511 USD
A
Retailer 2
-
$6,863 USD
View
A
Retailer 3
-
$6,863 USD
View
Retailer 4
-
$7,391 USD
View
Price last confirmed 29 days ago
A
Retailer 5
-
$7,474 USD
View
B+
Retailer 6
-
$7,654 USD
View
B+
Retailer 7
-
$8,020 USD
View
B+
Retailer 8
-
$8,071 USD
View
B+
Retailer 9
-
$8,280 USD
View
Most Expensive
B+
Yorxs
5290575B9 · Nov 6
$8,613 USD
€8,203 EUR
View
9 more retailers have this diamond
Prices start from $6,511 USDSave up to $2,102 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
$6,511 USD