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Round|Natural|GIA

1.51ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 6545694423

Certificate GIA 6545694423

Diamond specifications and retailer prices

From $7,185 SGD
As of November 6, 2026
Save $9,194 SGD (56%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $16,379 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6545694423. Listed at 19 retailers as of November 5, 2026, with prices from $7,185 to $16,379, a $9,194 spread on the same certified stone. NZ Jewellers lists it at $16,379. 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
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6545694423
Dimensions7.33 × 7.35 × 4.52 mm
L/W Ratio1.00
Top View
7.33 mm7.35 mm1.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6545694423
Side View
Table 57.0%Crown 35°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 61.6%

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 6
Current: $16,379 SGD|Low: $7,119 SGD|High: $16,379 SGD|Avg: $10,063 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
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 6, 2026
Retailer 16$7,185 SGD
Retailer 7$7,737 SGD
Retailer 5$8,189 SGD
Retailer 9$8,189 SGD
Retailer 18$8,221 SGD
Retailer 4$8,873 SGD
Retailer 8$9,008 SGD
Retailer 12$9,080 SGD
Retailer 17$9,442 SGD
Retailer 15$9,698 SGD
Retailer 6$10,237 SGD
Retailer 10$10,791 SGD
Retailer 11$10,792 SGD
Retailer 3$10,983 SGD
Retailer 2$11,880 SGD
Retailer 13$11,948 SGD
Retailer 14$13,612 SGD
NZ Jewellers$16,379 SGD

33 data points across 18 retailers

19 retailers$7,185 SGD to $16,379 SGD

A
Cheapest Retailer
-
$7,185 SGD
B+
Retailer 2
-
$7,731 SGD
View
B+
Retailer 3
-
$7,737 SGD
View
B+
Retailer 4
-
$8,189 SGD
View
Final sale: no returns
Retailer 5
-
$8,189 SGD
View
Price last confirmed 8 days ago
B+
Retailer 6
-
$8,221 SGD
View
B+
Retailer 7
-
$8,873 SGD
View
B+
Retailer 8
-
$9,008 SGD
View
B+
Retailer 9
-
$9,080 SGD
View
Retailer 10
-
$9,442 SGD
View
Price last confirmed 15 days ago
B+
Retailer 11
-
$9,698 SGD
View
B+
Retailer 12
-
$10,237 SGD
View
Retailer 13
-
$10,791 SGD
View
Price last confirmed 14 days ago
B+
Retailer 14
-
$10,792 SGD
View
B
Retailer 15
-
$10,983 SGD
View
B
Retailer 16
-
$11,880 SGD
View
B
Retailer 17
-
$11,948 SGD
View
B
Retailer 18
-
$13,612 SGD
View
Most Expensive
B
NZ Jewellers
7238d773-89f0-446b-9262-05b231d63538 · Nov 5
$16,379 SGD
$12,780 USD
View
18 more retailers have this diamond
Prices start from $7,185 SGDSave up to $9,194 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
1.51ct Round
$7,185 SGD