Radiant|Natural|GIA

1.51ct H SI1 Radiant Natural Diamond

EX • H/SI1 • GIA 3505913556

Certificate GIA 3505913556

Diamond specifications and retailer prices

From $4,223 USD
Save $4,948 USD (54%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $9,171 USD at MOH London
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 H 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 3505913556. Listed at 11 retailers, with prices from $4,223 to $9,171 at MOH London, a $4,948 spread on the same certified stone. 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
H
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle45.9°
Pavilion angle56.3°
OriginNatural
Grading LabGIA
CertificateGIA 3505913556
Dimensions6.55 × 6.53 × 4.31 mm
L/W Ratio1.00
Top View
6.55 mm6.53 mm1.51 ctH / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 3505913556
Side View
Table 63.0%Crown 45.9°Girdle: MED-STKPavilion 56.3°Culet: NoneDepth 66.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0-100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 1
Current: $9,171 USD|Low: $4,223 USD|High: $9,171 USD|Avg: $6,057 USD|+0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 1, 2026
Retailer 10$4,223 USD
Retailer 9$5,213 USD
Retailer 6$5,426 USD
Retailer 11$5,525 USD
Retailer 4$5,845 USD
Retailer 7$5,864 USD
Retailer 3$5,985 USD
Retailer 2$6,250 USD
Retailer 8$6,440 USD
Retailer 5$7,029 USD
MOH London$9,171 USD

31 data points across 11 retailers

11 retailers$4,223 USD to $9,171 USD

A
Cheapest Retailer
-
$4,223 USD
A
Retailer 2
-
$5,213 USD
View
A
Retailer 3
-
$5,426 USD
£4,273 GBP
View
B+
Retailer 4
-
$5,440 USD
View
B+
Retailer 5
-
$5,845 USD
A$8,992 AUD
View
B+
Retailer 6
-
$5,877 USD
£4,628 GBP
View
B+
Retailer 7
-
$5,985 USD
View
B+
Retailer 8
-
$6,250 USD
€5,952 EUR
View
B+
Retailer 9
-
$6,440 USD
£5,071 GBP
View
B+
Retailer 10
-
$7,029 USD
ZAR 113,562 ZAR
View
Most Expensive
B
MOH London
E09C98D37 · Oct 1
$9,171 USD
£7,221 GBP
View
10 more retailers have this diamond
Prices start from $4,223 USDSave up to $4,948 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.

A
1.51ct Radiant
$4,223 USD