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Radiant|Natural|GIA

1.51ct E SI2 Radiant Natural Diamond

EX • E/SI2 • GIA 6551551304

Certificate GIA 6551551304

Diamond specifications and retailer prices

From $4,058 USD
HK$31,700 HKD
As of October 29, 2026
Save $5,150 USD (56%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $9,208 USD at Queensmith · As of October 28, 2026
View at Queensmith

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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6551551304. Listed at 17 retailers as of October 28, 2026, with prices from $4,058 to $9,208, a $5,150 spread on the same certified stone. Queensmith lists it at $9,208. 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
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551551304
Dimensions7.68 × 5.89 × 4.08 mm
L/W Ratio1.30
Girdle conditionPolished
Culet sizeNone
Key to symbols
Cloud, Feather, Crystal, Knot, Cavity, Needle
Top View
7.68 mm5.89 mm1.51 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6551551304
Side View
Table 69.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 69.2%

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 29
Current: $9,208 USD|Low: $4,058 USD|High: $9,246 USD|Avg: $5,758 USD|+0.1%
Queensmith
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 29, 2026
Retailer 3$4,058 USD
Retailer 5$4,398 USD
Retailer 8$4,796 USD
Retailer 10$4,986 USD
Retailer 9$5,046 USD
Retailer 4$5,213 USD
Retailer 2$5,318 USD
Retailer 12$5,468 USD
Retailer 11$5,621 USD
Retailer 7$6,179 USD
Retailer 6$8,755 USD
Queensmith$9,208 USD

32 data points across 12 retailers

17 retailers$4,058 USD to $9,208 USD

A
Cheapest Retailer
-
$4,058 USD
HK$31,700 HKD
A
Retailer 2
-
$4,398 USD
₹418,836 INR
View
A
Retailer 3
-
$4,796 USD
SGD 6,481 SGD
View
A
Retailer 4
-
$4,986 USD
View
A
Retailer 5
-
$5,046 USD
View
Final sale: no returns
A
Retailer 6
-
$5,213 USD
SGD 7,045 SGD
View
A
Retailer 7
-
$5,318 USD
£4,187 GBP
View
Retailer 8
-
$5,468 USD
View
Price last confirmed 21 days ago
Retailer 9
-
$5,468 USD
View
Price last confirmed 29 days ago
Retailer 10
-
$5,468 USD
View
Price last confirmed 22 days ago
A
Retailer 11
-
$5,621 USD
View
A
Retailer 12
-
$5,660 USD
A$8,708 AUD
View
A
Retailer 13
-
$6,179 USD
€5,885 EUR
View
Retailer 14
-
$6,309 USD
View
Price last confirmed 20 days ago
B+
Retailer 15
-
$8,755 USD
£6,894 GBP
View
Retailer 16
-
$9,145 USD
View
Price last confirmed 30 days ago
Most Expensive
B
Queensmith
6551551304 · Oct 28
$9,208 USD
£7,250 GBP
View
16 more retailers have this diamond
Prices start from $4,058 USDSave up to $5,150 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
$4,058 USD