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Marquise|Lab Grown|IGI

1.70ct G VS1 Marquise Lab Grown Diamond

VG • G/VS1 • IGI LG502155355

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG502155355

Diamond specifications and retailer prices

From $1,969 AUD
$1,380 USD
As of November 2, 2026
Save $2,262 AUD (53%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $6,230 AUD at Loose Grown Diamond · As of November 1, 2026
View at Loose Grown Diamond

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 very-good cut grade and certified by IGI LG502155355 or 502155355. Listed at 16 retailers as of November 2, 2026, with a 115% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.70
Carat
G
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle37.4°
Pavilion angle36°
OriginLab Grown
Grading LabIGI
CertificateIGI LG502155355
Dimensions12.41 × 6.27 × 3.58 mm
L/W Ratio1.98
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
12.41 mm6.27 mm1.70 ctG / VS1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG502155355
Side View
Table 59.5%Crown 37.4°Girdle: MED-STKPavilion 36°Culet: NoneDepth 57.1%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $6,230 AUD|Low: $1,969 AUD|High: $10,842 AUD|Avg: $5,985 AUD|+0.6%
Loose Grown Diamond
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 3, 2026
Retailer 7$1,969 AUD
Retailer 10$3,445 AUD
Retailer 3$3,748 AUD
Retailer 4$3,857 AUD
Retailer 11$3,995 AUD
Retailer 13$5,492 AUD
Retailer 2$5,504 AUD
Retailer 9$5,990 AUD
Loose Grown Diamond$6,230 AUD
Retailer 8$7,346 AUD
Retailer 5$7,589 AUD
Retailer 12$10,669 AUD
Retailer 6$10,699 AUD

44 data points across 13 retailers

16 retailers$1,969 AUD to $4,231 AUD

B
Cheapest Retailer
-
$1,969 AUD
$1,380 USD
B
Retailer 2
-
$3,445 AUD
$2,414 USD
View
B
Retailer 3
-
$3,748 AUD
$2,627 USD
View
B
Retailer 4
-
$3,857 AUD
$2,703 USD
View
Final sale: no returns
Retailer 5
-
$3,995 AUD
$2,800 USD
View
Price last confirmed 21 days ago
B
Retailer 6
-
$3,995 AUD
$2,800 USD
View
B
Retailer 7
-
$4,231 AUD
$2,965 USD
View
Retailer 8
-
$5,492 AUD
$3,849 USD
View
Price under review
Retailer 9
-
$5,504 AUD
£3,037 GBP
View
Price under review
Retailer 10
-
$5,990 AUD
$4,198 USD
View
Price under review
Most Expensive
Loose Grown Diamond
502155355 · Nov 1
$6,230 AUD
$4,366 USD
View
Price under review
10 more retailers have this diamond
Prices start from $1,969 AUDSave up to $2,262 AUD

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
1.70ct Marquise
$1,969 AUD