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Round|Lab Grown|IGI

1.29ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG835670914

Shape and cutting style on the report: Round brilliant

Certificate IGI LG835670914

Diamond specifications and retailer prices

From £250 GBP
$335 USD
As of November 3, 2026
Save £1,710 GBP (87%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: £1,960 GBP at Brilliant Earth · As of November 1, 2026
View at Brilliant Earth

About this 1.29ct lab-grown round diamond

This 1.29ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG835670914 or 835670914. Listed at 26 retailers as of November 1, 2026, with prices from £250 to £1,960, a £1,710 spread on the same certified stone. Brilliant Earth lists it at £1,960. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.29
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG835670914
Dimensions7.04 × 7.08 × 4.30 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
7.04 mm7.08 mm1.29 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG835670914
Side View
Table 57.0%Crown 34.3°Girdle: MediumPavilion 40.9°Culet: NoneDepth 60.9%

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 3
Current: £1,960 GBP|Low: £200 GBP|High: £1,960 GBP|Avg: £663 GBP|+0.4%
Brilliant Earth
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November 3, 2026
Retailer 18£200 GBP
Retailer 17£241 GBP
Retailer 3£250 GBP
Retailer 16£258 GBP
Retailer 21£258 GBP
Retailer 7£344 GBP
Retailer 9£410 GBP
Retailer 27£410 GBP
Retailer 11£469 GBP
Retailer 4£475 GBP
Retailer 13£483 GBP
Retailer 28£497 GBP
Retailer 25£526 GBP
Retailer 2£544 GBP
Retailer 5£619 GBP
Retailer 15£656 GBP
Retailer 6£740 GBP
Retailer 14£756 GBP
Retailer 24£769 GBP
Retailer 22£829 GBP
Retailer 19£890 GBP
Retailer 29£901 GBP
Retailer 20£915 GBP
Retailer 8£1,064 GBP
Retailer 12£1,100 GBP
Retailer 10£1,121 GBP
Retailer 26£1,222 GBP
Retailer 23£1,788 GBP
Brilliant Earth£1,960 GBP

16 data points across 29 retailers

26 retailers£250 GBP to £1,960 GBP

Retailer 1
-
£200 GBP
$268 USD
Price last confirmed 32 days ago
A
Retailer 2
-
£250 GBP
$335 USD
View
Final sale: no returns
Retailer 3
-
£258 GBP
$346 USD
View
Price last confirmed 31 days ago
A
Retailer 4
-
£344 GBP
$461 USD
View
A
Retailer 5
-
£410 GBP
$550 USD
View
A
Retailer 6
-
£410 GBP
$550 USD
View
A
Retailer 7
-
£469 GBP
$630 USD
View
A
Retailer 8
-
£475 GBP
€607 EUR
View
A
Retailer 9
-
£483 GBP
View
A
Retailer 10
-
£497 GBP
$667 USD
View
A
Retailer 11
-
£526 GBP
ZAR 11,394 ZAR
View
A
Retailer 12
-
£544 GBP
View
A
Retailer 13
-
£557 GBP
$747 USD
View
Retailer 14
-
£656 GBP
$880 USD
View
Price last confirmed 7 days ago
B+
Retailer 15
-
£740 GBP
A$1,528 AUD
View
B+
Retailer 16
-
£756 GBP
$1,015 USD
View
B+
Retailer 17
-
£769 GBP
View
Retailer 18
-
£829 GBP
$1,113 USD
View
Price last confirmed 34 days ago
Retailer 19
-
£890 GBP
A$1,837 AUD
View
Price last confirmed 33 days ago
B+
Retailer 20
-
£901 GBP
CA$1,680 CAD
View
B+
Retailer 21
-
£1,064 GBP
$1,428 USD
View
B
Retailer 22
-
£1,100 GBP
$1,476 USD
View
B
Retailer 23
-
£1,121 GBP
$1,505 USD
View
B
Retailer 24
-
£1,222 GBP
View
B
Retailer 25
-
£1,788 GBP
$2,400 USD
View
Most Expensive
B
Brilliant Earth
21654764A · Nov 1
£1,960 GBP
$2,630 USD
View
25 more retailers have this diamond
Prices start from £250 GBPSave up to £1,710 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 Round
£250 GBP