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Round|Natural|IGI

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 $3,983 NZD
$2,245 USD
As of October 30, 2026
Save $5,234 NZD (57%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $9,217 NZD 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 $3,983 to $9,217, a $5,234 spread on the same certified stone. NZ Jewellers lists it at $9,217. 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
Colour
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: $9,217 NZD|Low: $2,745 NZD|High: $9,217 NZD|Avg: $4,965 NZD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 1, 2026
Retailer 6$2,745 NZD
Retailer 5$3,983 NZD
Retailer 9$4,070 NZD
Retailer 7$4,084 NZD
Retailer 14$4,194 NZD
Retailer 11$4,409 NZD
Retailer 13$4,409 NZD
Retailer 10$4,613 NZD
Retailer 4$4,658 NZD
Retailer 12$5,087 NZD
Retailer 2$5,144 NZD
Retailer 3$5,246 NZD
Retailer 8$7,540 NZD
NZ Jewellers$9,217 NZD

35 data points across 14 retailers

11 retailers$3,983 NZD to $9,217 NZD

A
Cheapest Retailer
-
$3,983 NZD
$2,245 USD
A
Retailer 2
-
$4,070 NZD
$2,294 USD
View
Final sale: no returns
A
Retailer 3
-
$4,084 NZD
£1,812 GBP
View
A
Retailer 4
-
$4,409 NZD
$2,485 USD
View
A
Retailer 5
-
$4,409 NZD
$2,485 USD
View
A
Retailer 6
-
$4,613 NZD
$2,600 USD
View
A
Retailer 7
-
$4,658 NZD
$2,625 USD
View
A
Retailer 8
-
$5,087 NZD
$2,867 USD
View
A
Retailer 9
-
$5,144 NZD
€2,761 EUR
View
B+
Retailer 10
-
$7,540 NZD
£3,346 GBP
View
Most Expensive
B
NZ Jewellers
847bf1c9-4f0d-461b-afc1-baf01741f4bf · Oct 30
$9,217 NZD
$5,195 USD
View
10 more retailers have this diamond
Prices start from $3,983 NZDSave up to $5,234 NZD

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
$3,983 NZD