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Round|Lab Grown|IGI

1.55ct D VS2 Round Lab Grown Diamond

ID • D/VS2 • IGI LG770649331

Shape and cutting style on the report: Round brilliant

Certificate IGI LG770649331

Diamond specifications and retailer prices

From £170 GBP
$228 USD
As of November 1, 2026
Save £1,150 GBP (87%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £1,320 GBP at Helzberg Diamonds · As of October 29, 2026
View at Helzberg Diamonds

About this 1.55ct lab-grown round diamond

This 1.55ct lab-grown round sits in the one-and-a-half to two carat band, graded D colour (colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG770649331 or 770649331. Listed at 22 retailers as of October 29, 2026, with prices from £170 to £1,320, a £1,150 spread on the same certified stone. Helzberg Diamonds lists it at £1,320. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.55
Carat
D
Colour
VS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG770649331
Dimensions7.37 × 7.41 × 4.59 mm
L/W Ratio1.01
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
7.37 mm7.41 mm1.55 ctD / VS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG770649331
Side View
Table 58.0%Crown 35.9°Girdle: MediumPavilion 40.9°Culet: NoneDepth 62.2%

Caratlytics Score

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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 1
Current: £1,320 GBP|Low: £163 GBP|High: £1,320 GBP|Avg: £543 GBP
Helzberg Diamonds
Retailer 2
Retailer 3
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Retailer 12
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Retailer 17
November 1, 2026
Retailer 17£170 GBP
Retailer 16£198 GBP
Retailer 4£211 GBP
Retailer 5£211 GBP
Retailer 8£284 GBP
Retailer 10£335 GBP
Retailer 13£384 GBP
Retailer 11£393 GBP
Retailer 14£421 GBP
Retailer 6£548 GBP
Retailer 7£601 GBP
Retailer 3£678 GBP
Retailer 9£755 GBP
Retailer 15£822 GBP
Retailer 2£845 GBP
Retailer 12£948 GBP
Helzberg Diamonds£1,320 GBP

35 data points across 17 retailers

22 retailers£170 GBP to £1,320 GBP

A
Cheapest Retailer
-
£170 GBP
$228 USD
A
Retailer 2
-
£198 GBP
$265 USD
View
Retailer 3
-
£211 GBP
$283 USD
View
Price last confirmed 7 days ago
A
Retailer 4
-
£211 GBP
$283 USD
View
B+
Retailer 5
-
£284 GBP
$380 USD
View
A
Retailer 6
-
£335 GBP
View
A
Retailer 7
-
£353 GBP
$473 USD
View
A
Retailer 8
-
£384 GBP
€490 EUR
View
A
Retailer 9
-
£393 GBP
View
A
Retailer 10
-
£401 GBP
$537 USD
View
B+
Retailer 11
-
£421 GBP
A$868 AUD
View
B+
Retailer 12
-
£548 GBP
$734 USD
View
Retailer 13
-
£601 GBP
$805 USD
View
Price last confirmed 11 days ago
B+
Retailer 14
-
£678 GBP
$909 USD
View
B+
Retailer 15
-
£682 GBP
SGD 1,234 SGD
View
Retailer 16
-
£718 GBP
$962 USD
View
Price last confirmed 14 days ago
B
Retailer 17
-
£755 GBP
$1,011 USD
View
B
Retailer 18
-
£822 GBP
A$1,694 AUD
View
B
Retailer 19
-
£845 GBP
View
B
Retailer 20
-
£859 GBP
$1,151 USD
View
B
Retailer 21
-
£948 GBP
$1,270 USD
View
Most Expensive
B
Helzberg Diamonds
ZXZNONMJLGLK · Oct 29
£1,320 GBP
$1,769 USD
View
21 more retailers have this diamond
Prices start from £170 GBPSave up to £1,150 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
1.55ct Round
£170 GBP