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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 $5,201 SGD
HK$31,700 HKD
As of October 29, 2026
Save $6,601 SGD (56%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $11,801 SGD 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 $5,201 to $11,801, a $6,601 spread on the same certified stone. Queensmith lists it at $11,801. 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
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

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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: Oct 29
Current: $11,801 SGD|Low: $5,201 SGD|High: $11,850 SGD|Avg: $7,375 SGD|+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 30, 2026
Retailer 3$5,201 SGD
Retailer 5$5,637 SGD
Retailer 8$6,147 SGD
Retailer 10$6,391 SGD
Retailer 9$6,467 SGD
Retailer 4$6,682 SGD
Retailer 2$6,837 SGD
Retailer 12$7,008 SGD
Retailer 11$7,205 SGD
Retailer 7$7,920 SGD
Retailer 6$11,222 SGD
Queensmith$11,801 SGD

33 data points across 12 retailers

17 retailers$5,201 SGD to $11,801 SGD

A
Cheapest Retailer
-
$5,201 SGD
HK$31,700 HKD
A
Retailer 2
-
$5,637 SGD
₹418,836 INR
View
A
Retailer 3
-
$6,147 SGD
View
A
Retailer 4
-
$6,391 SGD
$4,986 USD
View
A
Retailer 5
-
$6,467 SGD
$5,046 USD
View
Final sale: no returns
A
Retailer 6
-
$6,682 SGD
View
A
Retailer 7
-
$6,837 SGD
£4,200 GBP
View
Retailer 8
-
$7,008 SGD
$5,468 USD
View
Price last confirmed 22 days ago
Retailer 9
-
$7,008 SGD
$5,468 USD
View
Price last confirmed 29 days ago
Retailer 10
-
$7,008 SGD
$5,468 USD
View
Price last confirmed 22 days ago
A
Retailer 11
-
$7,205 SGD
$5,621 USD
View
A
Retailer 12
-
$7,255 SGD
A$8,708 AUD
View
A
Retailer 13
-
$7,920 SGD
€5,885 EUR
View
Retailer 14
-
$8,086 SGD
$6,309 USD
View
Price last confirmed 20 days ago
B+
Retailer 15
-
$11,222 SGD
£6,894 GBP
View
Retailer 16
-
$11,721 SGD
$9,145 USD
View
Price last confirmed 30 days ago
Most Expensive
B
Queensmith
6551551304 · Oct 28
$11,801 SGD
£7,250 GBP
View
16 more retailers have this diamond
Prices start from $5,201 SGDSave up to $6,601 SGD

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
$5,201 SGD