CaratHunter
Plans
Marquise|Lab Grown|IGI

1.70ct G VS1 Marquise Lab Grown Diamond

EX • G/VS1 • IGI LG707556634

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG707556634

Diamond specifications and retailer prices

From £364 GBP
€465 EUR
As of October 29, 2026
Save £519 GBP (59%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £883 GBP at Rare Carat · As of November 1, 2026
View at Rare Carat

About this 1.7ct lab-grown marquise diamond

This 1.7ct lab-grown marquise sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG707556634 or 707556634. Listed at 8 retailers as of October 29, 2026, with prices from £364 to £883, a £519 spread on the same certified stone. Rare Carat lists it at £883. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.70
Carat
G
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG707556634
Dimensions12.06 × 6.25 × 3.88 mm
L/W Ratio1.93
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.06 mm6.25 mm1.70 ctG / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG707556634
Side View
Table 61.0%Crown 35.4°Girdle: MED-THKPavilion 40.6°Culet: NoneDepth 62.1%

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: Oct 29
Current: £412 GBP|Low: £347 GBP|High: £883 GBP|Avg: £513 GBP|+5.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 3, 2026
Retailer 3£364 GBP
Retailer 7£369 GBP
Retailer 1£412 GBP
Retailer 4£440 GBP
Retailer 6£467 GBP
Retailer 5£740 GBP
Retailer 2£874 GBP

43 data points across 7 retailers

8 retailers£364 GBP to £883 GBP

A
Cheapest Retailer
-
£364 GBP
€465 EUR
B+
Retailer 2
-
£369 GBP
$495 USD
View
A
Retailer 3
-
£412 GBP
View
A
Retailer 4
-
£440 GBP
$590 USD
View
A
Retailer 5
-
£467 GBP
$627 USD
View
B+
Retailer 6
-
£740 GBP
$992 USD
View
B
Retailer 7
-
£874 GBP
View
Most Expensive
B
Rare Carat
MDP-825_l_707556634 · Nov 1
£883 GBP
$1,185 USD
View
7 more retailers have this diamond
Prices start from £364 GBPSave up to £519 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
1.70ct Marquise
£364 GBP