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Radiant|Natural|GIA

1.51ct I SI1 Radiant Natural Diamond

EX • I/SI1 • GIA 6183608449

Certificate GIA 6183608449

Diamond specifications and retailer prices

From $4,999 SGD
$3,909 USD
As of November 2, 2026
Save $5,527 SGD (53%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $10,526 SGD at MOH London · As of October 29, 2026
View at MOH London

About this 1.51ct natural radiant diamond

This 1.51ct natural radiant sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6183608449. Listed at 16 retailers as of October 29, 2026, with prices from $4,999 to $10,526, a $5,527 spread on the same certified stone. MOH London lists it at $10,526. 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
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6183608449
Dimensions7.34 × 5.85 × 4.09 mm
L/W Ratio1.25
Culet sizeNone
Top View
7.34 mm5.85 mm1.51 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6183608449
Side View
Table 65.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 69.9%

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 2
Current: $10,526 SGD|Low: $4,934 SGD|High: $10,598 SGD|Avg: $6,447 SGD|+0.4%
MOH London
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
November 2, 2026
Retailer 15$4,999 SGD
Retailer 9$5,103 SGD
Retailer 3$5,136 SGD
Retailer 4$5,256 SGD
Retailer 6$5,624 SGD
Retailer 5$6,272 SGD
Retailer 14$6,287 SGD
Retailer 8$6,563 SGD
Retailer 11$6,628 SGD
Retailer 10$6,689 SGD
Retailer 13$6,689 SGD
Retailer 12$6,906 SGD
Retailer 2$7,015 SGD
Retailer 7$7,256 SGD
MOH London$10,526 SGD

43 data points across 15 retailers

16 retailers$4,999 SGD to $10,526 SGD

A
Cheapest Retailer
-
$4,999 SGD
$3,909 USD
Retailer 2
-
$5,103 SGD
$3,990 USD
View
Price last confirmed 12 days ago
A
Retailer 3
-
$5,136 SGD
$4,016 USD
View
A
Retailer 4
-
$5,256 SGD
$4,110 USD
View
A
Retailer 5
-
$5,431 SGD
A$6,533 AUD
View
A
Retailer 6
-
$5,624 SGD
CA$6,108 CAD
View
A
Retailer 7
-
$6,272 SGD
$4,904 USD
View
A
Retailer 8
-
$6,287 SGD
$4,916 USD
View
A
Retailer 9
-
$6,563 SGD
£4,041 GBP
View
Retailer 10
-
$6,628 SGD
A$7,973 AUD
View
Price last confirmed 23 days ago
B+
Retailer 11
-
$6,689 SGD
$5,230 USD
View
B+
Retailer 12
-
$6,689 SGD
$5,230 USD
View
B+
Retailer 13
-
$6,906 SGD
$5,400 USD
View
B+
Retailer 14
-
$7,015 SGD
€5,224 EUR
View
Retailer 15
-
$7,256 SGD
$5,674 USD
View
Price last confirmed 10 days ago
Most Expensive
B
MOH London
308625714 · Oct 29
$10,526 SGD
£6,481 GBP
View
15 more retailers have this diamond
Prices start from $4,999 SGDSave up to $5,527 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
$4,999 SGD