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Round|Lab Grown|IGI

0.99ct D VVS1 Round Lab Grown Diamond

ID • D/VVS1 • IGI LG781618380

Shape and cutting style on the report: Round brilliant

Certificate IGI LG781618380

Diamond specifications and retailer prices

From £134 GBP
$180 USD
As of October 29, 2026
Save £1,079 GBP (89%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £1,213 GBP at Queensmith · As of October 27, 2026
View at Queensmith

About this 0.99ct lab-grown round diamond

This 0.99ct lab-grown round sits in the just-under-one-carat band, graded D colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG781618380 or 781618380. Listed at 24 retailers as of October 27, 2026, with prices from £134 to £1,213, a £1,079 spread on the same certified stone. Queensmith lists it at £1,213. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

0.99
Carat
D
Colour
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG781618380
Dimensions6.48 × 6.51 × 3.85 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
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
6.48 mm6.51 mm0.99 ctD / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG781618380
Side View
Table 60.0%Crown 35.4°Girdle: THN-MEDPavilion 40.2°Culet: NoneDepth 59.3%

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: Oct 29
Current: £294 GBP|Low: £129 GBP|High: £790 GBP|Avg: £351 GBP|-0.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 11£134 GBP
Retailer 3£167 GBP
Retailer 2£225 GBP
Retailer 1£294 GBP
Retailer 4£300 GBP
Retailer 7£302 GBP
Retailer 6£310 GBP
Retailer 8£417 GBP
Retailer 10£424 GBP
Retailer 9£672 GBP
Retailer 5£785 GBP

37 data points across 11 retailers

24 retailers£134 GBP to £1,213 GBP

A
Cheapest Retailer
-
£134 GBP
$180 USD
A
Retailer 2
-
£151 GBP
$202 USD
View
Final sale: no returns
A
Retailer 3
-
£156 GBP
$209 USD
View
A
Retailer 4
-
£167 GBP
$224 USD
View
A
Retailer 5
-
£167 GBP
$224 USD
View
A
Retailer 6
-
£191 GBP
HK$2,000 HKD
View
A
Retailer 7
-
£225 GBP
$302 USD
View
A
Retailer 8
-
£258 GBP
$346 USD
View
A
Retailer 9
-
£294 GBP
View
A
Retailer 10
-
£300 GBP
View
A
Retailer 11
-
£302 GBP
ZAR 6,534 ZAR
View
A
Retailer 12
-
£310 GBP
€395 EUR
View
B+
Retailer 13
-
£345 GBP
$462 USD
View
B+
Retailer 14
-
£417 GBP
A$859 AUD
View
B+
Retailer 15
-
£424 GBP
$568 USD
View
B+
Retailer 16
-
£456 GBP
SGD 825 SGD
View
Retailer 17
-
£507 GBP
$679 USD
View
Price last confirmed 51 days ago
B
Retailer 18
-
£537 GBP
$719 USD
View
B
Retailer 19
-
£556 GBP
$745 USD
View
B
Retailer 20
-
£577 GBP
$774 USD
View
Retailer 21
-
£672 GBP
$900 USD
View
Price last confirmed 14 days ago
B
Retailer 22
-
£785 GBP
View
B
Retailer 23
-
£844 GBP
$1,131 USD
View
Most Expensive
B
Queensmith
LG781618380 · Oct 27
£1,213 GBP
View
23 more retailers have this diamond
Prices start from £134 GBPSave up to £1,079 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
0.99ct Round
£134 GBP