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Marquise|Lab Grown

1.00ct D SI1 Marquise Lab Grown Diamond

VG • D/SI1 • 990F842138

Diamond specifications and retailer prices

From £158 GBP
$212 USD
As of October 30, 2026
Save £472 GBP (75%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £631 GBP at NZ Jewellers · As of October 31, 2026
View at NZ Jewellers

About this 1ct lab-grown marquise diamond

This 1ct lab-grown marquise sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade. Listed at 4 retailers as of October 30, 2026, with prices from £158 to £631, a £472 spread on the same certified stone. NZ Jewellers lists it at £631. 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

1.00
Carat
D
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading Lab
Certificate990F842138
Dimensions10.54 × 5.60 × 2.92 mm
L/W Ratio1.88
Top View
10.54 mm5.60 mm1.00 ctD / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Certificate990F842138
Side View
TableCrownGirdlePavilionCuletDepth

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £631 GBP|Low: £152 GBP|High: £631 GBP|Avg: £275 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
October 15, 2026
Retailer 4£158 GBP
Retailer 3£184 GBP
Retailer 2£196 GBP
NZ Jewellers£631 GBP

8 data points across 4 retailers

4 retailers£158 GBP to £631 GBP

B+
Cheapest Retailer
-
£158 GBP
$212 USD
B
Retailer 2
-
£184 GBP
$246 USD
View
B
Retailer 3
-
£196 GBP
$263 USD
View
Most Expensive
D
NZ Jewellers
1fa7f7c4-f57e-4a85-9a5e-3a5f5816ee58 · Oct 31
£631 GBP
$845 USD
View
3 more retailers have this diamond
Prices start from £158 GBPSave up to £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.

B+
1.00ct Marquise
£158 GBP