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Oval|Natural|GIA

1.29ct J SI1 Oval Natural Diamond

VG • J/SI1 • GIA 6555328018

Certificate GIA 6555328018

Diamond specifications and retailer prices

From £1,716 GBP
As of November 5, 2026
Save £1,472 GBP (46%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £3,188 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6555328018. Listed at 15 retailers as of November 5, 2026, with prices from £1,716 to £3,188, a £1,472 spread on the same certified stone. Helzberg Diamonds lists it at £3,188. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.29
Carat
J
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.54°
Pavilion angle40.4°
OriginNatural
Grading LabGIA
CertificateGIA 6555328018
Dimensions8.27 × 6.02 × 3.90 mm
L/W Ratio1.37
Culet sizeNone
Top View
8.27 mm6.02 mm1.29 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6555328018
Side View
Table 60.0%Crown 41.54°Girdle: STK-VTKPavilion 40.4°Culet: NoneDepth 64.8%

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 5
Current: £3,188 GBP|Low: £1,707 GBP|High: £3,252 GBP|Avg: £2,231 GBP|-2.0%
Helzberg Diamonds
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 6, 2026
Retailer 9£1,716 GBP
Retailer 6£1,792 GBP
Retailer 11£1,822 GBP
Retailer 12£1,842 GBP
Retailer 10£1,854 GBP
Retailer 8£1,983 GBP
Retailer 4£2,018 GBP
Retailer 14£2,179 GBP
Retailer 3£2,269 GBP
Retailer 2£2,325 GBP
Retailer 7£2,381 GBP
Retailer 13£2,826 GBP
Retailer 5£3,030 GBP
Helzberg Diamonds£3,188 GBP

36 data points across 14 retailers

15 retailers£1,716 GBP to £3,188 GBP

A
Cheapest Retailer
-
£1,716 GBP
A
Retailer 2
-
£1,792 GBP
View
A
Retailer 3
-
£1,822 GBP
View
A
Retailer 4
-
£1,842 GBP
View
A
Retailer 5
-
£1,854 GBP
View
B+
Retailer 6
-
£1,983 GBP
View
B+
Retailer 7
-
£2,018 GBP
View
B+
Retailer 8
-
£2,148 GBP
View
B+
Retailer 9
-
£2,179 GBP
View
B+
Retailer 10
-
£2,269 GBP
View
B+
Retailer 11
-
£2,325 GBP
View
B+
Retailer 12
-
£2,381 GBP
View
B
Retailer 13
-
£2,826 GBP
View
B
Retailer 14
-
£3,030 GBP
View
Most Expensive
B
Helzberg Diamonds
XZRMLLLJIOGHO · Nov 6
£3,188 GBP
$4,267 USD
View
14 more retailers have this diamond
Prices start from £1,716 GBPSave up to £1,472 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
£1,716 GBP