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1.70ct D SI1 Round Lab Grown Diamond

EX • D/SI1 • IGI LG773651523

Shape and cutting style on the report: Round brilliant

Certificate IGI LG773651523

Diamond specifications and retailer prices

From $461 USD
As of October 30, 2026
Save $538 USD (54%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $999 USD at Frank Darling · As of October 31, 2026
View at Frank Darling

About this 1.7ct lab-grown round diamond

This 1.7ct lab-grown round sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG773651523 or 773651523. Listed at 2 retailers as of October 30, 2026, with prices from $461 to $999, a $538 spread on the same certified stone. Frank Darling lists it at $999. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.70
Carat
D
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle41.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG773651523
Dimensions7.61 × 7.69 × 4.72 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.61 mm7.69 mm1.70 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG773651523
Side View
Table 59.0%Crown 33°Girdle: MED-STKPavilion 41.5°Culet: NoneDepth 61.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: $999 USD|Low: $245 USD|High: $999 USD|Avg: $568 USD
Frank Darling
Retailer 2
Retailer 3
September 30, 2026
Retailer 3$245 USD
Retailer 2$461 USD
Frank Darling$999 USD

5 data points across 3 retailers

2 retailers$461 USD to $999 USD

A
Cheapest Retailer
-
$461 USD
Most Expensive
B
Frank Darling
LVX02-223ABA · Oct 31
$999 USD
View
1 more retailer has this diamond
Prices start from $461 USDSave up to $538 USD

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 Round
$461 USD