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Radiant|Natural|GIA

3.21ct D SI1 Radiant Natural Diamond

ID • D/SI1 • GIA 1555690021

Certificate GIA 1555690021

Diamond specifications and retailer prices

From $44,122 USD
HK$344,700 HKD
As of November 1, 2026
Save $37,821 USD (46%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $81,943 USD at MOH London · As of November 2, 2026
View at MOH London

About this 3.21ct natural radiant diamond

This 3.21ct natural radiant sits in the three to five 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 1555690021. Listed at 22 retailers as of November 1, 2026, with prices from $44,122 to $81,943, a $37,821 spread on the same certified stone. MOH London lists it at $81,943. 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

3.21
Carat
D
Color
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle50.85°
Pavilion angle51.88°
OriginNatural
Grading LabGIA
CertificateGIA 1555690021
Dimensions10.71 × 7.39 × 4.70 mm
L/W Ratio1.45
Culet sizeNone
Key to symbols
Crystal, Needle
Top View
10.71 mm7.39 mm3.21 ctD / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1555690021
Side View
Table 67.0%Crown 50.85°Girdle: ThickPavilion 51.88°Culet: NoneDepth 63.7%

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: $81,943 USD|Low: $44,122 USD|High: $83,358 USD|Avg: $56,145 USD|-1.7%
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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
November 2, 2026
Retailer 6$44,122 USD
Retailer 14$46,162 USD
Retailer 19$48,023 USD
Retailer 20$48,096 USD
Retailer 7$49,270 USD
Retailer 11$49,813 USD
Retailer 5$50,420 USD
Retailer 9$52,115 USD
Retailer 3$54,654 USD
Retailer 18$54,654 USD
Retailer 8$56,435 USD
Retailer 21$56,840 USD
Retailer 16$56,850 USD
Retailer 17$56,850 USD
Retailer 15$58,740 USD
Retailer 10$58,879 USD
Retailer 4$59,027 USD
Retailer 12$60,910 USD
Retailer 13$63,642 USD
Retailer 2$68,691 USD
MOH London$81,943 USD

35 data points across 21 retailers

22 retailers$44,122 USD to $81,943 USD

A
Cheapest Retailer
-
$44,122 USD
HK$344,700 HKD
A
Retailer 2
-
$46,162 USD
View
B+
Retailer 3
-
$48,023 USD
View
B+
Retailer 4
-
$48,096 USD
View
Final sale: no returns
B+
Retailer 5
-
$49,270 USD
View
B+
Retailer 6
-
$49,813 USD
SGD 67,315 SGD
View
B+
Retailer 7
-
$50,420 USD
View
B+
Retailer 8
-
$52,115 USD
View
B+
Retailer 9
-
$54,654 USD
View
B+
Retailer 10
-
$54,654 USD
View
B+
Retailer 11
-
$56,435 USD
View
B+
Retailer 12
-
$56,840 USD
View
B
Retailer 13
-
$56,850 USD
View
B
Retailer 14
-
$56,850 USD
View
B
Retailer 15
-
$58,740 USD
View
Retailer 16
-
$58,879 USD
View
Price last confirmed 10 days ago
B+
Retailer 17
-
$59,027 USD
View
Retailer 18
-
$59,939 USD
View
Price last confirmed 62 days ago
B+
Retailer 19
-
$60,910 USD
View
B+
Retailer 20
-
$63,642 USD
€60,611 EUR
View
B
Retailer 21
-
$68,691 USD
£54,088 GBP
View
Most Expensive
B
MOH London
EE3EA3935 · Nov 2
$81,943 USD
£64,522 GBP
View
21 more retailers have this diamond
Prices start from $44,122 USDSave up to $37,821 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
3.21ct Radiant
$44,122 USD