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1.28ct I SI1 Round Natural Diamond

EX • I/SI1 • IGI 654416426

Shape and cutting style on the report: Round brilliant

Certificate IGI 654416426

Diamond specifications and retailer prices

From ₹2,77,440 INR
As of November 4, 2026
Save ₹2,67,015 INR (49%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: ₹5,44,454 INR at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.28ct natural round diamond

This 1.28ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 654416426. Listed at 14 retailers as of November 4, 2026, with prices from ₹2,77,440 to ₹5,44,454, a ₹2,67,015 spread on the same certified stone. NZ Jewellers lists it at ₹5,44,454. 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

1.28
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.8°
Pavilion angle41.1°
OriginNatural
Grading LabIGI
CertificateIGI 654416426
Dimensions6.98 × 7.01 × 4.25 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
6.98 mm7.01 mm1.28 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 654416426
Side View
Table 60.0%Crown 33.8°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 60.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: ₹2,91,809 INR|Low: ₹2,88,428 INR|High: ₹5,16,184 INR|Avg: ₹3,56,594 INR|-1.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 6₹2,88,428 INR
Retailer 1₹2,91,809 INR
Retailer 7₹3,24,494 INR
Retailer 2₹3,27,217 INR
Retailer 3₹3,42,526 INR
Retailer 4₹3,81,409 INR
Retailer 5₹5,08,671 INR

39 data points across 7 retailers

14 retailers₹2,77,440 INR to ₹5,44,454 INR

A
Cheapest Retailer
-
₹2,77,440 INR
A
Retailer 2
-
₹2,88,428 INR
View
Final sale: no returns
A
Retailer 3
-
₹2,91,809 INR
View
A
Retailer 4
-
₹3,01,953 INR
View
A
Retailer 5
-
₹3,12,472 INR
View
Retailer 6
-
₹3,12,472 INR
View
Price last confirmed 8 days ago
B+
Retailer 7
-
₹3,24,494 INR
View
B+
Retailer 8
-
₹3,25,996 INR
View
A
Retailer 9
-
₹3,27,217 INR
View
B+
Retailer 10
-
₹3,42,526 INR
View
B+
Retailer 11
-
₹3,60,559 INR
View
B+
Retailer 12
-
₹3,81,409 INR
View
B
Retailer 13
-
₹5,08,671 INR
View
Most Expensive
B
NZ Jewellers
8092b639-6918-494c-8177-29875da9e610 · Nov 5
₹5,44,454 INR
$5,797 USD
View
13 more retailers have this diamond
Prices start from ₹2,77,440 INRSave up to ₹2,67,015 INR

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
1.28ct Round
₹2,77,440 INR