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1.27ct D SI2 Round Natural Diamond

EX • D/SI2 • IGI 635475226

Shape and cutting style on the report: Round brilliant

Certificate IGI 635475226

Diamond specifications and retailer prices

From $3,861 AUD
$2,712 USD
As of October 30, 2026
Save $4,891 AUD (56%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $8,752 AUD at NZ Jewellers · As of October 30, 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 D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 635475226. Listed at 6 retailers as of October 30, 2026, with prices from $3,861 to $8,752, a $4,891 spread on the same certified stone. NZ Jewellers lists it at $8,752. 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
D
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.5°
Pavilion angle40.8°
OriginNatural
Grading LabIGI
CertificateIGI 635475226
Dimensions6.89 × 6.85 × 4.35 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
6.89 mm6.85 mm1.27 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 635475226
Side View
Table 55.0%Crown 36.5°Girdle: MediumPavilion 40.8°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: Oct 30
Current: $8,752 AUD|Low: $3,861 AUD|High: $8,752 AUD|Avg: $5,016 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 15, 2026
Retailer 3$3,861 AUD
Retailer 4$4,187 AUD
Retailer 6$4,257 AUD
Retailer 2$4,348 AUD
Retailer 5$4,830 AUD
NZ Jewellers$8,752 AUD

3 data points across 6 retailers

6 retailers$3,861 AUD to $8,752 AUD

A
Cheapest Retailer
-
$3,861 AUD
$2,712 USD
A
Retailer 2
-
$4,187 AUD
$2,941 USD
View
A
Retailer 3
-
$4,257 AUD
$2,990 USD
View
A
Retailer 4
-
$4,348 AUD
$3,054 USD
View
A
Retailer 5
-
$4,830 AUD
$3,393 USD
View
Most Expensive
B
NZ Jewellers
010ce570-ccc6-44dd-a616-9dbe537fd914 · Oct 30
$8,752 AUD
$6,148 USD
View
5 more retailers have this diamond
Prices start from $3,861 AUDSave up to $4,891 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
$3,861 AUD