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Round|Natural|IGI

1.27ct I SI2 Round Natural Diamond

EX • I/SI2 • IGI 722558728

Shape and cutting style on the report: Round brilliant

Certificate IGI 722558728

Diamond specifications and retailer prices

From $2,861 AUD
$2,010 USD
As of October 28, 2026
Save $3,760 AUD (57%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $6,621 AUD at NZ Jewellers · As of October 27, 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 722558728. Listed at 11 retailers as of October 27, 2026, with prices from $2,861 to $6,621, a $3,760 spread on the same certified stone. NZ Jewellers lists it at $6,621. 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
I
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.2°
OriginNatural
Grading LabIGI
CertificateIGI 722558728
Dimensions6.85 × 6.88 × 4.28 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Top View
6.85 mm6.88 mm1.27 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 722558728
Side View
Table 57.0%Crown 36.5°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 62.4%

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 28
Current: $6,621 AUD|Low: $2,861 AUD|High: $6,621 AUD|Avg: $3,898 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 28, 2026
Retailer 8$2,861 AUD
Retailer 5$3,022 AUD
Retailer 10$3,106 AUD
Retailer 9$3,168 AUD
Retailer 11$3,168 AUD
Retailer 7$3,313 AUD
Retailer 3$3,365 AUD
Retailer 12$3,654 AUD
Retailer 4$3,796 AUD
Retailer 2$3,949 AUD
Retailer 6$5,556 AUD
NZ Jewellers$6,621 AUD

21 data points across 12 retailers

11 retailers$2,861 AUD to $6,621 AUD

A
Cheapest Retailer
-
$2,861 AUD
$2,010 USD
A
Retailer 2
-
$3,022 AUD
£1,671 GBP
View
A
Retailer 3
-
$3,106 AUD
$2,182 USD
View
A
Retailer 4
-
$3,168 AUD
$2,225 USD
View
Retailer 5
-
$3,168 AUD
$2,225 USD
View
Price last confirmed 19 days ago
A
Retailer 6
-
$3,313 AUD
$2,327 USD
View
A
Retailer 7
-
$3,365 AUD
$2,364 USD
View
A
Retailer 8
-
$3,654 AUD
$2,567 USD
View
A
Retailer 9
-
$3,949 AUD
€2,642 EUR
View
B+
Retailer 10
-
$5,556 AUD
£3,073 GBP
View
Most Expensive
B
NZ Jewellers
e363ac91-d48e-44a0-bcad-6ccbbdf1bddd · Oct 27
$6,621 AUD
$4,651 USD
View
10 more retailers have this diamond
Prices start from $2,861 AUDSave up to $3,760 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
$2,861 AUD