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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 $7,092 AUD
$4,970 USD
As of November 3, 2026
Save $4,667 AUD (40%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $11,759 AUD at MOH London · As of November 2, 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 2, 2026, with prices from $7,092 to $11,759, a $4,667 spread on the same certified stone. MOH London lists it at $11,759. 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 3
Current: $11,759 AUD|Low: $5,302 AUD|High: $12,257 AUD|Avg: $8,051 AUD|+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$5,725 AUD
Retailer 3$5,929 AUD
Retailer 14$6,992 AUD
Retailer 13$7,085 AUD
Retailer 11$7,092 AUD
Retailer 7$7,301 AUD
Retailer 4$7,329 AUD
Retailer 2$7,564 AUD
Retailer 9$7,783 AUD
Retailer 8$8,050 AUD
Retailer 6$8,456 AUD
Retailer 10$9,298 AUD
MOH London$11,759 AUD
Retailer 5$12,257 AUD

24 data points across 14 retailers

9 retailers$7,092 AUD to $11,759 AUD

Retailer 1
-
$7,085 AUD
Price last confirmed 30 days ago
B+
Retailer 2
-
$7,092 AUD
$4,970 USD
View
B+
Retailer 3
-
$7,301 AUD
£4,029 GBP
View
B+
Retailer 4
-
$7,564 AUD
$5,301 USD
View
B+
Retailer 5
-
$7,783 AUD
$5,454 USD
View
B+
Retailer 6
-
$8,050 AUD
€5,373 EUR
View
Retailer 7
-
$8,456 AUD
$5,926 USD
View
Price last confirmed 42 days ago
B
Retailer 8
-
$9,298 AUD
ZAR 105,271 ZAR
View
Most Expensive
B
MOH London
A5D378394 · Nov 2
$11,759 AUD
£6,489 GBP
View
8 more retailers have this diamond
Prices start from $7,092 AUDSave up to $4,667 AUD

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
$7,092 AUD