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1.55ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 6531188321

Certificate GIA 6531188321

Diamond specifications and retailer prices

From $9,288 SGD
As of November 6, 2026
Save $11,665 SGD (56%) vs most expensive(unlock to see where)
28 retailers carry this diamond
Most expensive: $20,953 SGD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.55ct natural round diamond

This 1.55ct 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 6531188321. Listed at 28 retailers as of November 5, 2026, with prices from $9,288 to $20,953, a $11,665 spread on the same certified stone. NZ Jewellers lists it at $20,953. 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

1.55
Carat
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6531188321
Dimensions7.36 × 7.34 × 4.56 mm
L/W Ratio1.00
Top View
7.36 mm7.34 mm1.55 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6531188321
Side View
Table 58.0%Crown 36°Girdle: Slightly ThickPavilion 40.6°Culet: NoneDepth 62.1%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: $11,505 SGD|Low: $9,288 SGD|High: $17,669 SGD|Avg: $12,668 SGD|-0.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 9$9,288 SGD
Retailer 6$9,580 SGD
Retailer 4$9,808 SGD
Retailer 8$10,052 SGD
Retailer 1$11,505 SGD
Retailer 7$11,574 SGD
Retailer 3$12,908 SGD
Retailer 2$15,283 SGD
Retailer 5$17,412 SGD

44 data points across 9 retailers

28 retailers$9,288 SGD to $20,953 SGD

B+
Cheapest Retailer
-
$9,288 SGD
B+
Retailer 2
-
$9,499 SGD
View
B+
Retailer 3
-
$9,580 SGD
View
B+
Retailer 4
-
$9,786 SGD
View
B+
Retailer 5
-
$9,808 SGD
View
B+
Retailer 6
-
$10,052 SGD
View
Final sale: no returns
B+
Retailer 7
-
$10,090 SGD
View
B+
Retailer 8
-
$10,295 SGD
View
B+
Retailer 9
-
$10,426 SGD
View
Retailer 10
-
$10,476 SGD
View
Price last confirmed 8 days ago
B
Retailer 11
-
$11,165 SGD
View
B
Retailer 12
-
$11,350 SGD
View
B+
Retailer 13
-
$11,505 SGD
View
B
Retailer 14
-
$11,524 SGD
View
Retailer 15
-
$11,574 SGD
View
Price last confirmed 14 days ago
B
Retailer 16
-
$11,627 SGD
View
B
Retailer 17
-
$12,042 SGD
View
B
Retailer 18
-
$12,419 SGD
View
B
Retailer 19
-
$12,419 SGD
View
B
Retailer 20
-
$12,698 SGD
View
B
Retailer 21
-
$12,829 SGD
View
B
Retailer 22
-
$12,908 SGD
View
B
Retailer 23
-
$13,095 SGD
View
B
Retailer 24
-
$13,372 SGD
View
Retailer 25
-
$13,791 SGD
View
Price last confirmed 14 days ago
B
Retailer 26
-
$15,283 SGD
View
B
Retailer 27
-
$17,412 SGD
View
Most Expensive
B
NZ Jewellers
bad8d0d6-c1c9-4c6b-977e-f24c51c588e1 · Nov 5
$20,953 SGD
$16,349 USD
View
27 more retailers have this diamond
Prices start from $9,288 SGDSave up to $11,665 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+
1.55ct Round
$9,288 SGD