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Round|Natural|GIA

1.27ct F SI1 Round Natural Diamond

EX • F/SI1 • GIA 2554428338

Certificate GIA 2554428338

Diamond specifications and retailer prices

From $6,356 SGD
$4,970 USD
As of November 1, 2026
Save $4,183 SGD (40%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $10,539 SGD at MOH London · As of November 1, 2026
View at MOH London

About this 1.27ct natural round diamond

This 1.27ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2554428338. Listed at 9 retailers as of November 1, 2026, with prices from $6,356 to $10,539, a $4,183 spread on the same certified stone. MOH London lists it at $10,539. 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

1.27
Carat
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 2554428338
Dimensions6.90 × 6.96 × 4.34 mm
L/W Ratio1.01
Culet sizeNone
Top View
6.90 mm6.96 mm1.27 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2554428338
Side View
Table 58.0%Crown 34.5°Girdle: MediumPavilion 41.8°Culet: NoneDepth 62.6%

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 1
Current: $10,539 SGD|Low: $4,752 SGD|High: $10,986 SGD|Avg: $7,211 SGD|+0.6%
MOH London
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
November 2, 2026
Retailer 12$5,131 SGD
Retailer 3$5,314 SGD
Retailer 14$6,267 SGD
Retailer 13$6,350 SGD
Retailer 11$6,356 SGD
Retailer 7$6,544 SGD
Retailer 4$6,568 SGD
Retailer 2$6,779 SGD
Retailer 9$6,975 SGD
Retailer 8$7,215 SGD
Retailer 6$7,579 SGD
Retailer 10$8,334 SGD
MOH London$10,539 SGD
Retailer 5$10,986 SGD

25 data points across 14 retailers

9 retailers$6,356 SGD to $10,539 SGD

Retailer 1
-
$6,350 SGD
A$7,639 AUD
Price last confirmed 29 days ago
B+
Retailer 2
-
$6,356 SGD
$4,970 USD
View
B+
Retailer 3
-
$6,544 SGD
£4,029 GBP
View
B+
Retailer 4
-
$6,779 SGD
$5,301 USD
View
B+
Retailer 5
-
$6,975 SGD
$5,454 USD
View
B+
Retailer 6
-
$7,215 SGD
€5,373 EUR
View
Retailer 7
-
$7,579 SGD
$5,926 USD
View
Price last confirmed 41 days ago
B
Retailer 8
-
$8,334 SGD
ZAR 105,271 ZAR
View
Most Expensive
B
MOH London
A5D378394 · Nov 1
$10,539 SGD
£6,489 GBP
View
8 more retailers have this diamond
Prices start from $6,356 SGDSave up to $4,183 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+
1.27ct Round
$6,356 SGD