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Round|Natural|GIA

1.51ct I SI2 Round Natural Diamond

EX • I/SI2 • GIA 6421142723

Certificate GIA 6421142723

Diamond specifications and retailer prices

From $11,821 SGD
As of November 4, 2026
Save $10,490 SGD (47%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $22,312 SGD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.51ct natural round diamond

This 1.51ct natural round 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 and certified by GIA 6421142723. Listed at 18 retailers as of November 4, 2026, with prices from $11,821 to $22,312, a $10,490 spread on the same certified stone. NZ Jewellers lists it at $22,312. 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
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6421142723
Dimensions7.45 × 7.43 × 4.49 mm
L/W Ratio1.00
Top View
7.45 mm7.43 mm1.51 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6421142723
Side View
Table 59.0%CrownGirdle: MediumPavilionCulet: NoneDepth 60.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $22,312 SGD|Low: $11,156 SGD|High: $22,312 SGD|Avg: $16,241 SGD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 7$11,821 SGD
Retailer 8$13,387 SGD
Retailer 10$13,387 SGD
Retailer 2$14,221 SGD
Retailer 12$14,502 SGD
Retailer 9$14,726 SGD
Retailer 5$16,042 SGD
Retailer 11$16,734 SGD
Retailer 3$17,611 SGD
Retailer 4$19,084 SGD
Retailer 6$20,851 SGD
NZ Jewellers$22,312 SGD

41 data points across 12 retailers

18 retailers$11,821 SGD to $22,312 SGD

B+
Cheapest Retailer
-
$11,821 SGD
B
Retailer 2
-
$12,191 SGD
View
B
Retailer 3
-
$12,420 SGD
View
B
Retailer 4
-
$12,793 SGD
View
Retailer 5
-
$13,387 SGD
View
Price last confirmed 8 days ago
B
Retailer 6
-
$13,387 SGD
View
Final sale: no returns
B
Retailer 7
-
$14,221 SGD
View
B
Retailer 8
-
$14,502 SGD
View
B
Retailer 9
-
$14,726 SGD
View
B
Retailer 10
-
$15,466 SGD
View
B
Retailer 11
-
$15,647 SGD
View
B
Retailer 12
-
$15,647 SGD
View
B
Retailer 13
-
$16,042 SGD
View
B
Retailer 14
-
$16,171 SGD
View
B
Retailer 15
-
$16,734 SGD
View
Retailer 16
-
$17,611 SGD
View
Price last confirmed 14 days ago
B
Retailer 17
-
$20,851 SGD
View
Most Expensive
B
NZ Jewellers
647ee53a-c6df-43c7-89e3-127918a6fd9a · Nov 5
$22,312 SGD
$17,468 USD
View
17 more retailers have this diamond
Prices start from $11,821 SGDSave up to $10,490 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.

B+
1.51ct Round
$11,821 SGD