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Radiant|Lab Grown|IGI

1.78ct D SI1 Radiant Lab Grown Diamond

ID • D/SI1 • IGI LG700558977

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG700558977

Diamond specifications and retailer prices

From ₹20,319 INR
$214 USD
As of October 30, 2026
Save ₹81,335 INR (80%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: ₹1,01,654 INR at MOH London · As of October 29, 2026
View at MOH London

About this 1.78ct lab-grown radiant diamond

This 1.78ct lab-grown radiant 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 LG700558977 or 700558977. Listed at 13 retailers as of October 29, 2026, with prices from ₹20,319 to ₹1,01,654, a ₹81,335 spread on the same certified stone. MOH London lists it at ₹1,01,654. 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

1.78
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.2°
Pavilion angle34.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG700558977
Dimensions8.74 × 5.97 × 3.87 mm
L/W Ratio1.46
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.74 mm5.97 mm1.78 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG700558977
Side View
Table 68.0%Crown 45.2°Girdle: MED-STKPavilion 34.4°Culet: NoneDepth 64.8%

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 30
Current: ₹1,01,654 INR|Low: ₹20,319 INR|High: ₹2,53,517 INR|Avg: ₹71,267 INR
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
Retailer 15
Retailer 16
October 31, 2026
Retailer 11₹20,319 INR
Retailer 5₹23,643 INR
Retailer 13₹25,257 INR
Retailer 12₹28,160 INR
Retailer 3₹29,169 INR
Retailer 2₹42,072 INR
Retailer 4₹43,202 INR
Retailer 9₹46,719 INR
Retailer 14₹50,418 INR
Retailer 16₹62,287 INR
Retailer 15₹81,087 INR
Retailer 10₹81,372 INR
Retailer 6₹83,402 INR
MOH London₹1,01,654 INR
Retailer 7₹1,50,791 INR
Retailer 8₹2,53,517 INR

4 data points across 16 retailers

13 retailers₹20,319 INR to ₹1,01,654 INR

A
Cheapest Retailer
-
₹20,319 INR
$214 USD
A
Retailer 2
-
₹23,643 INR
$249 USD
View
A
Retailer 3
-
₹25,257 INR
$266 USD
View
A
Retailer 4
-
₹28,160 INR
£234 GBP
View
A
Retailer 5
-
₹29,169 INR
HK$2,400 HKD
View
A
Retailer 6
-
₹42,072 INR
€422 EUR
View
B+
Retailer 7
-
₹43,202 INR
$455 USD
View
A
Retailer 8
-
₹46,719 INR
£387 GBP
View
A
Retailer 9
-
₹50,418 INR
$531 USD
View
B+
Retailer 10
-
₹62,287 INR
$656 USD
View
B+
Retailer 11
-
₹81,087 INR
$854 USD
View
B+
Retailer 12
-
₹81,372 INR
$857 USD
View
Most Expensive
B
MOH London
LG700558977 · Oct 29
₹1,01,654 INR
£843 GBP
View
12 more retailers have this diamond
Prices start from ₹20,319 INRSave up to ₹81,335 INR

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
1.78ct Radiant
₹20,319 INR