CaratHunter
Plans
Oval|Natural|IGI

1.29ct H SI2 Oval Natural Diamond

ID • H/SI2 • IGI 386

Certificate IGI 386

Diamond specifications and retailer prices

From £1,483 GBP
As of November 6, 2026
Save £1,197 GBP (45%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £2,680 GBP at Helzberg Diamonds · As of November 6, 2026
View at Helzberg Diamonds

About this 1.29ct natural oval diamond

This 1.29ct natural oval sits in the one-and-a-quarter to one-and-a-half carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI. Listed at 4 retailers as of November 6, 2026, with prices from £1,483 to £2,680, a £1,197 spread on the same certified stone. Helzberg Diamonds lists it at £2,680. 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

1.29
Carat
H
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabIGI
CertificateIGI 386
Dimensions8.70 × 6.25 × 3.77 mm
L/W Ratio1.39
Top View
8.70 mm6.25 mm1.29 ctH / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 386
Side View
Table 60.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 60.3%

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: Nov 6
Current: £2,680 GBP|Low: £1,369 GBP|High: £3,155 GBP|Avg: £1,988 GBP|-15.1%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 6, 2026
Retailer 5£1,369 GBP
Retailer 2£1,483 GBP
Retailer 3£1,496 GBP
Retailer 4£2,477 GBP
Helzberg Diamonds£2,680 GBP

29 data points across 5 retailers

4 retailers£1,483 GBP to £2,680 GBP

A
Cheapest Retailer
-
£1,483 GBP
A
Retailer 2
-
£1,496 GBP
View
A
Retailer 3
-
£2,477 GBP
View
Most Expensive
B+
Helzberg Diamonds
ZXZOIKMGKKHM · Nov 6
£2,680 GBP
$3,587 USD
View
3 more retailers have this diamond
Prices start from £1,483 GBPSave up to £1,197 GBP

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
1.29ct Oval
£1,483 GBP