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1.70ct H SI1 Round Lab Grown Diamond

EX • H/SI1 • IGI LG440012142

Shape and cutting style on the report: Round brilliant

Certificate IGI LG440012142

Diamond specifications and retailer prices

From $1,000 USD
As of October 31, 2026
Save $4,988 USD (83%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $5,988 USD at MOH London · As of October 29, 2026
View at MOH London

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 H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG440012142 or 440012142. Listed at 12 retailers as of October 29, 2026, with prices from $1,000 to $5,988, a $4,988 spread on the same certified stone. MOH London lists it at $5,988. 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
H
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.5°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG440012142
Dimensions7.78 × 7.77 × 4.54 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.78 mm7.77 mm1.70 ctH / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG440012142
Side View
Table 60.5%Crown 31.5°Girdle: MED-STKPavilion 40.1°Culet: NoneDepth 58.4%

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 31
Current: $5,988 USD|Low: $1,000 USD|High: $6,029 USD|Avg: $3,039 USD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 1, 2026
Retailer 7$1,000 USD
Retailer 9$1,798 USD
Retailer 12$1,956 USD
Retailer 14$2,013 USD
Retailer 3$2,086 USD
Retailer 10$2,086 USD
Retailer 4$2,255 USD
Retailer 5$2,773 USD
Retailer 11$3,271 USD
Retailer 8$3,508 USD
Retailer 2$3,598 USD
Retailer 13$3,909 USD
Retailer 6$5,970 USD
MOH London$5,988 USD

38 data points across 14 retailers

12 retailers$1,000 USD to $5,988 USD

A
Cheapest Retailer
-
$1,000 USD
B+
Retailer 2
-
$1,798 USD
View
B+
Retailer 3
-
$1,956 USD
View
B+
Retailer 4
-
$2,013 USD
View
Final sale: no returns
B
Retailer 5
-
$2,086 USD
View
Retailer 6
-
$2,086 USD
View
Price last confirmed 19 days ago
B+
Retailer 7
-
$2,255 USD
View
B
Retailer 8
-
$3,271 USD
View
B
Retailer 9
-
$3,508 USD
View
B
Retailer 10
-
$3,598 USD
£2,833 GBP
View
B
Retailer 11
-
$3,909 USD
View
Most Expensive
B
MOH London
LG440012142 · Oct 29
$5,988 USD
£4,715 GBP
View
11 more retailers have this diamond
Prices start from $1,000 USDSave up to $4,988 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
$1,000 USD