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Radiant|Natural|GIA

1.60ct D SI1 Radiant Natural Diamond

EX • D/SI1 • GIA 7516574860

Certificate GIA 7516574860

Diamond specifications and retailer prices

From $5,913 SGD
$4,625 USD
As of October 30, 2026
Save $940 SGD (14%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $6,852 SGD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.6ct natural radiant diamond

This 1.6ct natural radiant sits in the one-and-a-half to two carat band, graded D 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 7516574860. Listed at 3 retailers as of October 30, 2026, with prices from $5,913 to $6,852, a $940 spread on the same certified stone. Brilliant Earth lists it at $6,852. 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

1.60
Carat
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle40.4°
Pavilion angle54.5°
OriginNatural
Grading LabGIA
CertificateGIA 7516574860
Dimensions6.74 × 6.72 × 4.38 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Cert comments
Clouds are not shown. Pinpoints are not shown.
Key to symbols
Crystal, Feather, Needle
Top View
6.74 mm6.72 mm1.60 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 7516574860
Side View
Table 62.0%Crown 40.4°Girdle: MediumPavilion 54.5°Culet: NoneDepth 65.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: $6,852 SGD|Low: $5,913 SGD|High: $7,249 SGD|Avg: $6,658 SGD|-2.5%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
October 31, 2026
Retailer 3$5,913 SGD
Retailer 2$6,314 SGD
Brilliant Earth$6,852 SGD
Retailer 4$7,249 SGD

35 data points across 4 retailers

3 retailers$5,913 SGD to $6,852 SGD

A
Cheapest Retailer
-
$5,913 SGD
$4,625 USD
A
Retailer 2
-
$6,314 SGD
£3,889 GBP
View
Most Expensive
A
Brilliant Earth
13662632A · Oct 30
$6,852 SGD
$5,360 USD
View
2 more retailers have this diamond
Prices start from $5,913 SGDSave up to $940 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
1.60ct Radiant
$5,913 SGD