Radiant|Natural|GIA

1.51ct I SI2 Radiant Natural Diamond

ID • I/SI2 • GIA 5393568057

Certificate GIA 5393568057

Diamond specifications and retailer prices

From $3,674 USD
HK$28,700 HKD
As of November 1, 2026
Save $4,964 USD (57%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $8,638 USD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5393568057. Listed at 16 retailers as of October 30, 2026, with prices from $3,674 to $8,638, a $4,964 spread on the same certified stone. NZ Jewellers lists it at $8,638. 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
Color
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 5393568057
Dimensions7.41 × 5.65 × 3.88 mm
L/W Ratio1.31
Top View
7.41 mm5.65 mm1.51 ctI / SI2
OriginNatural
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 5393568057
Side View
Table 66.0%CrownGirdle: SLI-THKPavilionCulet: NoneDepth 68.8%

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: $8,638 USD|Low: $3,648 USD|High: $8,638 USD|Avg: $5,220 USD
NZ Jewellers
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
November 1, 2026
Retailer 13$3,674 USD
Retailer 6$4,135 USD
Retailer 9$4,324 USD
Retailer 4$4,397 USD
Retailer 3$4,576 USD
Retailer 10$4,599 USD
Retailer 2$4,836 USD
Retailer 12$4,889 USD
Retailer 15$4,958 USD
Retailer 16$4,958 USD
Retailer 17$4,958 USD
Retailer 7$5,020 USD
Retailer 5$5,110 USD
Retailer 14$5,611 USD
Retailer 18$5,721 USD
Retailer 8$6,034 USD
Retailer 11$7,897 USD
NZ Jewellers$8,638 USD

25 data points across 18 retailers

16 retailers$3,674 USD to $8,638 USD

A
Cheapest Retailer
-
$3,674 USD
HK$28,700 HKD
A
Retailer 2
-
$4,324 USD
View
A
Retailer 3
-
$4,397 USD
View
B+
Retailer 4
-
$4,576 USD
View
Final sale: no returns
A
Retailer 5
-
$4,677 USD
SGD 6,320 SGD
View
A
Retailer 6
-
$4,836 USD
£3,808 GBP
View
A
Retailer 7
-
$4,889 USD
£3,850 GBP
View
B+
Retailer 8
-
$4,958 USD
View
A
Retailer 9
-
$4,958 USD
View
A
Retailer 10
-
$4,958 USD
View
B+
Retailer 11
-
$5,020 USD
View
B+
Retailer 12
-
$5,110 USD
View
B+
Retailer 13
-
$5,611 USD
€5,344 EUR
View
B+
Retailer 14
-
$5,721 USD
View
B
Retailer 15
-
$7,897 USD
£6,218 GBP
View
Most Expensive
B
NZ Jewellers
968484e3-63f5-41a0-b601-95c083e8afb6 · Oct 30
$8,638 USD
View
15 more retailers have this diamond
Prices start from $3,674 USDSave up to $4,964 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
1.51ct Radiant
$3,674 USD