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Round|Natural|GIA

1.27ct F SI2 Round Natural Diamond

EX • F/SI2 • GIA 6541958660

Certificate GIA 6541958660

Diamond specifications and retailer prices

From $3,750 AUD
$2,634 USD
As of November 2, 2026
Save $3,408 AUD (48%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $7,537 AUD at NZ Jewellers · As of September 28, 2026
View at NZ Jewellers

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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6541958660. Listed at 9 retailers as of October 29, 2026, with a 91% 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

1.27
Carat
F
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 6541958660
Dimensions6.85 × 6.90 × 4.34 mm
L/W Ratio1.01
Star length50%
Top View
6.85 mm6.90 mm1.27 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6541958660
Side View
Table 57.0%Crown 36.5°GirdlePavilion 41°Culet: NoneDepth 63.2%

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 2
Current: $4,318 AUD|Low: $3,660 AUD|High: $7,311 AUD|Avg: $4,818 AUD|-2.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 2, 2026
Retailer 4$3,750 AUD
Retailer 1$4,318 AUD
Retailer 6$4,325 AUD
Retailer 5$4,328 AUD
Retailer 2$4,541 AUD
Retailer 7$5,147 AUD
Retailer 3$7,158 AUD

25 data points across 7 retailers

9 retailers$3,750 AUD to $7,158 AUD

A
Cheapest Retailer
-
$3,750 AUD
$2,634 USD
Final sale: no returns
A
Retailer 2
-
$4,318 AUD
£2,388 GBP
View
Retailer 3
-
$4,325 AUD
$3,038 USD
View
Price last confirmed 34 days ago
Retailer 4
-
$4,328 AUD
$3,040 USD
View
Price last confirmed 17 days ago
Retailer 5
-
$4,491 AUD
$3,155 USD
View
Price last confirmed 33 days ago
A
Retailer 6
-
$4,541 AUD
€3,038 EUR
View
Retailer 7
-
$4,991 AUD
$3,506 USD
View
Price last confirmed 33 days ago
B+
Retailer 8
-
$7,158 AUD
£3,959 GBP
View
Most Expensive
NZ Jewellers
9d33eca8-ac60-443b-94f7-be878d60f780 · Sep 28
$7,537 AUD
$5,294 USD
View
Price last confirmed 35 days ago
8 more retailers have this diamond
Prices start from $3,750 AUDSave up to $3,408 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.

A
1.27ct Round
$3,750 AUD