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Radiant|Natural|GIA

1.51ct I SI1 Radiant Natural Diamond

EX • I/SI1 • GIA 1558685000

Certificate GIA 1558685000

Diamond specifications and retailer prices

From $5,272 SGD
$4,124 USD
As of November 1, 2026
Save $4,281 SGD (45%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $9,553 SGD at Wholesale Diamonds Direct · As of October 26, 2026
View at Wholesale Diamonds Direct

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 1558685000. Listed at 13 retailers as of October 26, 2026, with prices from $5,272 to $9,553, a $4,281 spread on the same certified stone. Wholesale Diamonds Direct lists it at $9,553. 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
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1558685000
Dimensions7.75 × 5.70 × 3.87 mm
L/W Ratio1.36
Culet sizeNone
Top View
7.75 mm5.70 mm1.51 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1558685000
Side View
Table 67.0%CrownGirdle: THK-VTKPavilionCulet: 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: Nov 1
Current: $6,760 SGD|Low: $5,272 SGD|High: $9,739 SGD|Avg: $6,769 SGD|-1.6%
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
Wholesale Diamonds Direct
November 2, 2026
Retailer 10$5,272 SGD
Retailer 12$5,333 SGD
Retailer 8$5,420 SGD
Retailer 9$5,544 SGD
Retailer 4$5,714 SGD
Retailer 6$5,956 SGD
Retailer 13$6,594 SGD
Retailer 2$6,615 SGD
Retailer 1$6,760 SGD
Retailer 7$7,261 SGD
Retailer 5$7,469 SGD
Retailer 11$8,827 SGD
Retailer 3$9,381 SGD
Wholesale Diamonds Direct$9,553 SGD

31 data points across 14 retailers

13 retailers$5,272 SGD to $9,553 SGD

A
Cheapest Retailer
-
$5,272 SGD
$4,124 USD
A
Retailer 2
-
$5,333 SGD
View
A
Retailer 3
-
$5,420 SGD
$4,240 USD
View
A
Retailer 4
-
$5,544 SGD
$4,337 USD
View
A
Retailer 5
-
$5,714 SGD
View
A
Retailer 6
-
$5,956 SGD
£3,668 GBP
View
A
Retailer 7
-
$6,594 SGD
$5,158 USD
View
A
Retailer 8
-
$6,615 SGD
$5,174 USD
View
A
Retailer 9
-
$6,760 SGD
€5,036 EUR
View
B+
Retailer 10
-
$7,261 SGD
$5,680 USD
View
B
Retailer 11
-
$8,827 SGD
$6,905 USD
View
B
Retailer 12
-
$9,381 SGD
$7,338 USD
View
Most Expensive
B
Wholesale Diamonds Direct
570704296 · Oct 26
$9,553 SGD
$7,473 USD
View
12 more retailers have this diamond
Prices start from $5,272 SGDSave up to $4,281 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
$5,272 SGD