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1.25ct I SI2 Round Natural Diamond

EX • I/SI2 • IGI 670479480

Shape and cutting style on the report: Round brilliant

Certificate IGI 670479480

Diamond specifications and retailer prices

From $2,245 USD
As of October 30, 2026
Save $2,950 USD (57%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $5,195 USD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.25ct natural round diamond

This 1.25ct 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 670479480. Listed at 11 retailers as of October 30, 2026, with prices from $2,245 to $5,195, a $2,950 spread on the same certified stone. NZ Jewellers lists it at $5,195. 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

1.25
Carat
I
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32°
Pavilion angle41.6°
OriginNatural
Grading LabIGI
CertificateIGI 670479480
Dimensions6.90 × 6.95 × 4.19 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
6.90 mm6.95 mm1.25 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 670479480
Side View
Table 61.0%Crown 32°Girdle: Slightly ThickPavilion 41.6°Culet: NoneDepth 60.6%

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: $2,309 USD|Low: $1,547 USD|High: $4,300 USD|Avg: $2,594 USD|-0.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 2$1,547 USD
Retailer 10$2,245 USD
Retailer 5$2,294 USD
Retailer 1$2,309 USD
Retailer 7$2,364 USD
Retailer 6$2,485 USD
Retailer 9$2,625 USD
Retailer 3$2,907 USD
Retailer 8$2,957 USD
Retailer 4$4,256 USD

33 data points across 10 retailers

11 retailers$2,245 USD to $5,195 USD

A
Cheapest Retailer
-
$2,245 USD
A
Retailer 2
-
$2,294 USD
View
Final sale: no returns
A
Retailer 3
-
$2,309 USD
£1,818 GBP
View
A
Retailer 4
-
$2,485 USD
View
A
Retailer 5
-
$2,485 USD
View
A
Retailer 6
-
$2,600 USD
View
A
Retailer 7
-
$2,625 USD
View
A
Retailer 8
-
$2,867 USD
View
A
Retailer 9
-
$2,907 USD
€2,769 EUR
View
B+
Retailer 10
-
$4,256 USD
£3,351 GBP
View
Most Expensive
B
NZ Jewellers
847bf1c9-4f0d-461b-afc1-baf01741f4bf · Oct 30
$5,195 USD
View
10 more retailers have this diamond
Prices start from $2,245 USDSave up to $2,950 USD

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
1.25ct Round
$2,245 USD