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Round|Natural|GIA

1.55ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 6485913336

Certificate GIA 6485913336

Diamond specifications and retailer prices

From $10,894 SGD
As of November 4, 2026
Save $9,047 SGD (45%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $27,144 SGD at Diamond Quarter · As of November 5, 2026
View at Diamond Quarter

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 6485913336. Listed at 16 retailers as of November 4, 2026, with a 83% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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 angle33.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6485913336
Dimensions7.47 × 7.45 × 4.51 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
7.47 mm7.45 mm1.55 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6485913336
Side View
Table 59.0%Crown 33.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 60.5%

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 4
Current: $12,874 SGD|Low: $9,970 SGD|High: $18,909 SGD|Avg: $14,251 SGD|-0.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 5$10,894 SGD
Retailer 7$11,964 SGD
Retailer 1$12,874 SGD
Retailer 6$13,158 SGD
Retailer 8$13,161 SGD
Retailer 3$14,977 SGD
Retailer 2$17,454 SGD
Retailer 4$18,634 SGD

44 data points across 8 retailers

16 retailers$10,894 SGD to $19,940 SGD

B+
Cheapest Retailer
-
$10,894 SGD
B+
Retailer 2
-
$11,201 SGD
View
B
Retailer 3
-
$11,855 SGD
View
Retailer 4
-
$11,964 SGD
View
Price last confirmed 8 days ago
B
Retailer 5
-
$11,964 SGD
View
Final sale: no returns
B
Retailer 6
-
$12,874 SGD
View
B
Retailer 7
-
$12,961 SGD
View
Retailer 8
-
$13,158 SGD
View
Price last confirmed 14 days ago
B
Retailer 9
-
$13,161 SGD
View
B
Retailer 10
-
$14,955 SGD
View
B
Retailer 11
-
$14,977 SGD
View
Retailer 12
-
$15,746 SGD
View
Price last confirmed 14 days ago
B
Retailer 13
-
$17,454 SGD
View
B
Retailer 14
-
$18,634 SGD
View
B
Retailer 15
-
$19,940 SGD
View
Most Expensive
Diamond Quarter
1.55SI1H6436AC2BN · Nov 5
$27,144 SGD
£16,677 GBP
View
Price under review
15 more retailers have this diamond
Prices start from $10,894 SGDSave up to $9,047 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
$10,894 SGD